Need to Rant 😢

I normally keep in my feelings (I know that's not great), but I have to vent because I can't keep doing this. Six years ago, something snapped with my mom. I don't know what happened , but she became verbally abusive. My father has apologized to me for the things she's done so many times, but he's afraid to stand up to her in the moment. What's worse is that she claims to be a Christian, but acts completely far from. She wasn't always this way. She gave birth to me while in the mission field in a small South American town. During her pregnancy, she worked two jobs, didn't have air conditioning, and lived in a shed. Literally. She was the complete superwoman of a mom. However, she is now determined that I am being a whiny baby about my pregnancy and that I'm faking all of my symptoms. She thinks everyone's pregnancies are identical and that I need to suck it up. She has been so rude and condescending. She is also micromanaging my husband and I. She is trying to control where my money goes, what I do, when I work, etc. We are currently living with my family while we are both in college and working. His mother has invited us to live with her and my 4yo sister-in-law. They live 2 minutes from my husband's job, 15 from campus, and 7-8 from my job. His mom has been more of a mother to me than mine ever was. She is understanding, thoughtful, and actually takes time out of her day to talk to me. We told my parents we were considering moving in with my MIL and my mom started crying.. I felt awful.. But now she's acting like it's not going to happen and I'll be staying here once the baby is born. I don't know what to do. 😥😓