MIL Help

My husband and I are a few weeks away from meeting our baby boy (YAY!). This pregnancy has been stressful as I've had some major issues with my MIL. I wish I could say we have a fabulous relationship, but we don't. She hasn't approved of me since we've been engaged. Her comments and sneekyness have only gotten worse. My husband is her oldest son out of her two boys. My hubby is 27 and her other son is 25 and he's married as well. It is very obvious to everyone that she worships the ground my husband walks on. She doesn't act the same way towards her other son. I don't think she is accepting that her oldest is married and is a grown up who is very independent. This sounds awful but I completely think that if she could still breastfeed my husband she would. That's just how attached she is to him. My parents love my hubby to death and tell him on a regular basis how thankful they are for him. I won't bring up all the problems we've had or the hurtful conversations she's had with me. But I do need some help on this particular one. 

I posted an article my friend wrote about the joys of being a boy mom (That's what we are having). I shared the article and then posted this with it ...

"My little boy isn't born yet, but I thought I'd share. I know Kerstin and her sisters through church camp. I admire the way she raises her little family. It's so nice to have Godly women to look up to...especially when it comes to this crazy, new, exciting thing called parenthood!💙"

We all know I don't mean my baby is ONLY mine. That's crazy! Anyways, my MIL messaged me saying 

"OUR baby, not MY baby. You need to be aware that saying that probably makes _____ uncomfortable. You need to be thinking about him."

I replied with "That is between my husband and I. As his wife, I know that doesn't make him uncomfortable." I spoke with my husband about the issue and he thinks it's crazy anyone would think I'm just meaning that it's MY baby. He is going to call her. She takes jabs at me all the time and is just so hurtful. I don't feel like a daughter in law. I feel like I'm this woman my husband picked up off the street that is trashy and horrible. 

What are your thoughts on what I posted and what she said back? I wish we could enjoy this pregnancy without this drama all the time. I can't imagine what it's going to be like when or son is actually here. 

Thank you! 

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Add-on as I'd like to remain anonymous just incase! 

I'd remove her from social media but she holds SO much value in Facebook. She hasn't talked to her sister in two years because she removed her. It has started major fights before between her and her family and friends. I have been told that could start an insane amount of drama. It's so silly, I know. 

Also, my husband has talked to her and put his foot down. I've been there for that and it rocked! I feel awful he's in this position but he knows that it's now him and I. Not me, him, and his mom. She still doesn't get it and continues to talk behind my back or talk to me which is getting to be worse 🙈 I'd hate to keep her grandson away from his grandmother, but I'm having a difficult time being okay with him being around someone who hates his mother so much. Adulting and marriage is tough sometimes, y'all!