SIL's palmistry,astrology and zodiac madness driving me crazy..

I have this issue with my SIL.....brother's wife. Please suggest some advise.

My SIL believes in astrology, palmistry, zodiac signs and their behavior and such things. It is not that I don't believe but I do not rely on those 100%. I consider human emotions and circumstances more than just dismissing a person's behavior on his/her zodiac sign.

Whenever, my brother and SIL are here and we have some discussion and I try to put forth my viewpoint and if it is something they do not agree then I try to give more inputs and try to make them understand my viewpoint as well. I mean I have agreed to disagree so many times but that is when I have expressed my views 100%.

In the middle of the conversation, so many times, my SIL just cuts in and says "Oh! I get it why you are pushing so hard your thought on this, because you are a libran and librans are very good at arguing".

Or sometimes when my younger child who is 6yrs old throws a tantrum....she will be like "Yeah, she is a true Aries, I can say seeing her short temper".

Or when I try to persuade my nephew (her son) for something she just butts in as has to say something like " NO! You cannot get it from him. If Leos make up their mind, then thats it, they do not budge for anyone".

She even told me to keep watchful eye on my elder dd when she is in her teens or later because she is a scorpio and scorpios tend to have secret lives like secret affairs etc.

I cannot just pen down how many times she brings in her palmistry, astrology in any thing we start even in casual chats.
She saw my hand and said I had a love affair earlier. My hubby was right there and my brother too was there. I said NO! This time you are wrong. I did not. She says you see this line here, that says that you had.
And also see the mole here on your face. All these are the indicators.
Anyway, I could get away from this because my dh took it lightly. My brother also laughed it out. She got offended by this. I pleaded her in private not to talk like this. She says she told what she saw there.

I talked to my brother too and he says just ignore her. She reads a lot on these subjects and gets carried away. I mean, she should also know her limits too....right?

Every time, it will be like...you are like this because of this line, because of your zodiac blah blah blah.....

I cannot escape this because they live close by and we meet frequently.
Please suggest something.

Oh! How could I forget this? Recently, she told me since my birth number is this and my MIL's is this so we can never get along. All this in front of my dh. I told her NO! We are fine. Though I don't have a relationship as a daughter but atleast I have it just as a DIL should have. It is cordial. I stressed much. But she said it can never be possible and I am just saying it for the sake of it.
I told...OK then let it be. She went on to say that since hers and my moms numbers match so they are in better position than us. I asked her what has it got to do with MIL's birth date number....isn't
it ridiculous? She said yes you are right, for someone who does not have any knowledge of this science this is ridiculous!! And she got angry and left. I went and talked to her but she says I don't respect her anymore and she does not want to talk to me now.
I told my brother and he said leave her alone for some days, she will be fine and will come back.

We planned for a party for spring break. Both of us planned to host it at my brother's place where we will invite other friends. I have already invited them but now I don't know how to bring back my SIL to normal. Am scared to even talk to her. And what will I say my other friends?

 

Foundlove, Very apt! See the presence of mind of your mom.
I admire it so much. Please read my edit part and suggest something.
She always does this. I have to accept what she says is true or else she will get angry.

 

FL, Gauri and kma....thank you! I will just wait for some more days and try seeing if she has cooled down.

Yeah,kma you know what she says on this. One time, she told me that according to my numerological chart or whatever, I don't even know some terms, I misunderstand things too easily.
Whenever, we have any disagreements if you really see, I am the one doing the patch up work more than her. My brother once said, you are the one who is pampering her too much. Just leave her and she will be fine.
I don't see what I am misunderstanding here.

And, you know, when she is in good mood, she says I am more than her own sister. Actually, sometimes her good mood is also dangerous like one time she made so much biryani..just for dh and me... when dh praised her culinary skills, that biryani lasted for 5 days.....one big pot of it!!
She goes about telling friends how much I do for her and how we both are not SILs and just like sisters etc etc.,
I should say I have some soft corner for her. She is very very moody. When in nice mood she is very good to me. This new madness of hers....astrological one... is driving me crazy.