Should I Leave? (Crazy Mother in Law)

My mother in law is so obsessive, controlling and crazy and I'm tired of dealing with it.

I had my own place but we moved into my fiance's parents to "save money" 🙄 yeah right. They promised we didn't have to pay bills but slowly kept asking for help now we basically go half on everything. Whatever. I'm over that part. But over the 2 years I've been here I've seen her true colors. Treating me and my fiance like children when we have our own child. Going in our room when we're gone and going thru our things. Wanting to know what we're doing or going every second. I hate it. My own mother didn't treat me this way once i turned 18. Im 24 years old getting treated like im 15. And on top of it, IM NOT HER CHILD!!! I could understand with my fiance, thats her son. BUT ME??? Why??

I just dont feel comfortable and sometimes she makes me feel like I'm a bother, like i can't be anywhere in the house besides my room. She's the grandmother of my daughter and she barley even plays with her or holds her. Like she don't even care about her either.

Im truley done with these living conditions but the problem is my fiance see's nothing wrong with how we're being treated. He's probably just used to it but i tell him how i feel and he does nothing. He's a quiet guy who doesnt like unnecessary drama or confrontation. He doesn't even want to move out of his moms house til a couple of years. I don't think i can even last another month in this place to be honest. I really want to move back to my hometown with my family where im accepted and comfortable. He will NOT leave. So do I just go on my own with my daughter and leave my relationship?

We have no problems whatsoever besides this. He can't and will never stand up to his parents and i feel like im going to blow a fuse one of these days.

I stay respectful and never tell them anything so everything is just bottled up rn. & his mom is the type of person where you can't tell her anything without her getting offended and rude. And she thinks she's only right. She won't even consider your opinion. So talking to her about this would just cause an argument.

Anyways I've been rambling on..any advice would help me out!