Story of girl with no direction of what to do and where to go??????

My sister is married for 5 years.she has a 4 year old son and a daughter of 8 months old.
The problem started from the settling of the marriage itself.They kept on demanding for different things as dowry and use to speak in an abusive language.On the wedding day also there were many problems.After the wedding both use to fight and most of the fights will be related to the dowry or abusing my family in different manner.we kept quiet and after 3 months when she was pregneant then her husband suddenly left her at my parents house and gone.My father took my sister,went to them and talked to the entire family and the fights stopped for some time and they came to usa on job visa.
My sister's mother-in-law came to usa for helping with the delivery and their fights started again.There were physical abused her in her pregnancy.He use to torcher my parents by calling my parents at mid night by telling that i have beaten your daughter and i don't know if she is still alive or not.The process went on and she delivered a beautiful baby boy.
with this suffering she did suicidal attempts also.Her mother-in-law took the took the baby away and came to India forcibly saying that my sister will harm her baby.She didnot let my parents also to meet the baby while his stay in india.
they became normal for sometime and his job tensions started and they were laying off people.so he sent my sister to india and in the meantime he found different jobs and atlast found a good job.Now he is on H1 status.He came to india and got the stamping and my sister is on H4.
They went back to usa with the son.
After sometime he started his torture again when she became pregneant and she had to do 2 abortions in a row and now the new type torture is for her to get the job.She tried very hard and did two short term jobs also.in the meantime she was pregneant again with the baby girl and she was working .she stopped when she was around 6 months.
My mother was with her this time for the delivery.she delivered a baby girl.He use to say bad words to my mother also.she was with them for nine months.My sister started working again after two months of baby's birth.My mothers visa expired and she didnot get the extension and she had to leave.she took the baby at 6 months and came to india.The fights were going on and on when she was there and after she left.
My sisters husband one day suddenly said that he had to go to india as he has some office work.He built a house recently in hyderabad by taking loan and we helped him a lot by giving him money.He didnot even return half of the money after two and half years.so he said he will be doing the gruhapravesha and also finish office work when he is india and he took the son and went to india.He left my sister alone in usa saying that she recently joined the work.
He asked one my sister's male friend to stay with her even upon her saying no.My parents asked him how come he is forcing the person to stay at home knowing their soninlaw's nature and he just shoo them off.
Her husband started a friendship with a lady in the train on which he usually travels.she is in the process of divorce with her husband.both became so close and we dont know yet if they have a physical relationship and made plan to divorce my sister.He started torchuring her for every small thing.
When he was in india the husband of the girl with whom my sisters husband is now having the affair came to her and told her everything.He asked her to accompay him to show the proofs.
But my sister took it lightly and never paid attention to what he is saying.She called her husband and mother-in-law in india and told everything what the girls husband to her.
and he acted so nice to her and she said ok.Later we came to know that he travelled to India with the lady.he didnot have any office work or anything.He left the boy also in India and came back after a month.He started acting even more abusive.
He started recording their fights.She didnot know that he was doing this.He make her to shout at him or start the fight by telling different words and she used to fight.
This went on for two months and parents kept getting calls.we totally forgot about his illegal relationship in these fights.My sister contract finished and she was staying at home.
If she ask him to take somewhere he will tell to take her male friend and go and she protests as why she has to go with somebody else he will say nicely that she need to have friends.
she used to call my mother and tell that he is planning something against her.
She started suspecting him as he used changed the passwords for his e-mail,cell phone.
He used to delete the complete call history by the time he reaches home.He used to close the laptop when he sees her.He became over protective and even she touches anything he will react very badly.
One day they went to a movie and he went out saying he will go for rest room.He didnot come to 20 mins and my sister also went to rest room and started waiting for him outside.After sometime she started hearing her husband talking with somebody and laughing.She waited for sometime and pushed the door and as soon as he saw her he was startled.he said he called his mother.My sister called his mother and she said that she didnot get any call from him.He was caught once again.still she forgave him and we all convinced her that may be she is just a friend.
He was ok for 2 days and the fights started again and he called my parents and said that your daughter is maintaing two guys here.He is was stating one is the girls husband who he is having affair with and the other one is the male friend.My sister met the girl husband only one or twice and she didnot eve go with him to see the proofs.She dont even have any contact with him.
And her friend with whom she dont have any relationship and he was talking all nonsense.
she was tired and frustrated .her husband booked a psychraitric appointment and he took her.
She told everything to the doctor and the doctor told my sister husband that he will have to build confidence and to take good care of her and she dont have any mental illness.
He started cursing her as to how can she say all this to the doctor and if she have an affair with the doctor.He hit her and broke a cup on her head and went out of the house.My sister waited until midnight for him to come back and he didnot show up.She asked her friend to accompny her and went to the girl house to make sure he is not there.she just talked to the girl and came back.
He husband came back and she told him that she went to the girls house and again he started his abuse.this went on for another one month.She used to be afraid if is going to be evening not knowing what is in store.All family was suffering.
One day she gathered strength and took a bold step to find out why is her husband behaving like this.She put a cell phone recorder and fixed it under his seat.As soon as he went inside the car he called the girl he is having the affair and talking to her very sweetly.
My sister let us all hear the recorder along with his family.He was in the office at that time and he told her he was coming home.All his family persuaded him to come to India as now the matter became very serious.He said okay and by evening he bought tylenol tablets and put them in his packet and came home.When he was at the station only he didnt come home he called his mother and told that my sister is not at home and she went away with somebody and that is why he is taking the pills.My sister was at home only and he was telling them all lies as he was caught.He cam home, went inside the bathroom and took the pills.My sister was afraid and calling everybody as he was refusing to come to hospital.Atlast he went.He started abusing her again.
His family ignored the tape conversation and everything and started blaming my sister for the tablets he has taken.
His family flew from canada.They tried to prove that my sister has mental depression and the doctor certified that she has nothing of that sort.they forcibly sent her to india.
They started the blame game again.it is been 20 days she came and he is still abusing her whenever she calls.she stopped calling and still he calls and does he same.Even his family is doing the same thing.They have my sisters son with them and now his mother sister is taking him to usa.My sister have the baby girl.Her visa is going to expire and i dont think he is going to send any papers to her.
I ask her and my parents to complain in the womens cell but they are not doing that as my sister still loves her husband and she is thinking about the children.
i dont have any hope on that guy.It is been 6 months his daughter is in india and he never ask abou her.Even when he was in india in between he came to see her once.My parents live in the same city and he still did like that.He never took care of his son.
i am in a fix what to do and what not do?
she is not lodging a complaint or nor she is strong thinking she have good education and she can stand on her feet.He and his family are still talking like my sis did something.How can they do that?
Please advise what to do?