Alcoholic Mother in Law

Hallie
VERY LONG 
So my mil is an alcoholic. She drinks a 12 pack of tall boys every day or a 24 pack of regular cans. We have had our issues in the past because she let my husbands step dad abuse him and kick him out and he had to sleep in the park. Anyway so she left his step dad finally after he was moved out and they have gotten a much better relationship. Well we told her we were having a baby and after she told us she was moving to Texas to live with a guy she met on a game on her phone. So she moved no big deal she's happy. Well we told her in the beginning we wanted to have a gender reveal party. We told her if we were able to we would FaceTime her during the gender reveal. Well we called her before the party and told her what we were having because we didn't know if we would be able to FaceTime. Well we couldn't get our phones to connect at all because of where my sister lives. So we didn't get to FaceTime her, my dad, his dad, or my brothers. Well she decided out of spite she was going to post on Facebook what we were having. We didn't get to post and our families that weren't there found out from Facebook before we could tell them. She really wanted us to have a boy because she's never been around a girl she has boys only. Well as I look through her comments she acts completely angry and disappointed that we are having a girl. Like she cared way less about our child because of the sex and said she has a lot of time to consume alcohol to prepare her to put up with our baby. Basically now my husband doesn't want her to meet our daughter. He grew up with her reducing him and his brother around while drunk and he is scared she would do the same. She can't go without alcohol and that scares me. So if you were in this situation would you try to encourage your husband to change his mind or would you not want her to meet your baby at all. I don't want her to ever be around my kid if she has been drinking but I just feel so guilty because this is her first grand kid.