I Singed A Prenup 12 Years Ago But Things Have Drastically Changed

I (35 m) signed a prenup the day before getting married at 23 years old. At the time of the prenup I had nothing to my name so it didn’t seem like a big deal. The only red flag I saw back then was that the prenup was given to me the day before the wedding and I had to sign it before being late to the rehearsal.

My wife (35 f) is a typical trust fund kid. At the time her parents had paid for a house in her name which I was thankful for a place to live without paying rent. At the time it was assumed that we’d both be contributing to our upcoming lives together.

Fast forward 12 years (2 kids and a house we moved into 9 years ago) and I am the only person who has ever been employed while she has been an alcoholic for 5+ years and on her third rehab stint (two attempts on her life) I have made good money for years but she has spent almost every dime of it. All expenses are paid for by the income I make.

I never had a chance to read the actual prenup but now that I am filing for divorce it’s starting to have me worried. To summarize: the prenup states that she keeps everything and I split half of everything I have (which isn’t even 1% of her net worth). A lot goes into the story but I am positive both kids will be in my custody. I tried to talk to her parents about it and they stated that “I would need to pay the bills for two houses if this is what I want”. The main reason for the divorce is to protect my kids as the house had become an extremely toxic environment.

I don’t care about getting anything that is not mine but I feel like the prenup states that what I have will be split even though she has enough to retire on multiple times over. The house is in both names (I didn’t pay for it) she drives a $100k car that I have paid for.

Is it wrong of me to ask for some compensation for what I have put in and why I’m filing? If it came to it could I even get child support if she has no working income?