@WannabValerie, here's another perspective: Just as you are looking out for the best interests of your children, his parents are looking out for their kids. They have a child with juvenile arthritis and are protecting him. They don't know what the future will bring. They, too, may have heard stories of wives seeking divorce once the kids are grown. And they may be preparing for the worst. They hope to prevent you from laying claim to his $$ if you do divorce him. That may be why his assets are in his parents' names. She may have promised to care for him if you abandon him. Even if your SiL/BiL cheat your DH and keep the flats and cash for themselves, your ILs will feel happier if the assets go to their DD rather than to you. Your ILs are smart. They are prepared. He may or may not truly believe that. Your ILs may be unwilling to count on his assessment of you. How to combat this? Think things through. If you aren't truly planning on divorcing him, stop that train of thought. Stop talking about the flats in terms of your children's future. Start talking about putting money away for his health emergencies and for your old age together. Ask him how you'll both manage if his BiL goes rogue and claims the flats as your SiL's inheritance. Remind him that these days you can't count on your kids to look after you in old age. And you both need to plan where and how you'll survive in retirement. .