Is my mother in law crazy? Help I’m loosing it.

Okay guys this is going to be long so bare with me. My mother in law drives me absolutely Insane. I had a miscarriage last year. She made it all about how she lost a grandchild. My fiancé and I honestly took it well and were excited that I could even get pregnant! I was on chemo for 6 years! Well fast forward to this year found out I had to do chemo again. Well then bam I was pregnant! We are super excited I’m 21 weeks now with a little girl. Problem is she’s making every single thing about her. I had the gender reveal and planned everything myself. She pitched a bigger fit than Idk what. Well here’s our living situation. His parents are getting divorced so we moved in with his mom and bought the house so she could live without depending on his dad. We are also paying for updates for her house that have to be done. While in the process of trying to buy our first home. Well I got a lung infection from all the work that’s being doing so I’m going to stay on his aunts huge farm. Which is beneficial because ones a doctor and the other is a nurse. Well it was planned that he come stay at his aunts with me in Oct when the baby gets here. Because of the work we are paying for to update her house it’s not suitable for a baby. Well she’s decided that she is going to stay at his aunts with us. I shit you not. It’s a big house and a lot of land but seriously. She has a whole house she gets to live in it for free!! She’s following us and even though the house is huge it’s going to be cramped with a newborn and us! She texted me she’s going to stay in November and she’d just sleep on the couch. Which bothers the hell out of me because that means she’s going to try and hear the baby cry before I do and step in. I have no idea why she couldn’t just sleep in one of the many rooms if she stayed. Tonight I snapped. I told her she was mental I mean she’s already driving me nuts. I feel like I’m going fucking crazy. I mean we paid to have her house fixed and bought her house out just so she could live comfortably and she’s just wanting to move out. When the health concerns don’t apply to her because she’s not a baby? Guys help. I told her how I felt in text tonight. She pulled the Well I’m the one going to be basically homeless with a grandchild who can’t visit if she has to stay in the house till the constructions finished. Even though we paid her house off the house is in her name. So she’s not homeless she’s just being a pain in the fucking ass.Seriously we are only staying at his aunts Oct, Nov and December and hopefully closing in January on the new house. She’s making me want to literally strangle her. We paid her house off and we are paying for the upgrades and updates to the house. She just wants to follow us every fucking where. Shes also been pushing her limits with everything. The baby isn’t even here and she’s fighting with other family members about the baby. She’s also telling me things I should do for my daughter and I really just want to rip my hair out or hit her in the head really hard with a frying pan.