My alcoholic mother is NOT excited about my pregnancy.

I’m 32 and I’m four months pregnant with my first baby. My mom is 63 and she’s a lifelong alcoholic. A few times she seemed happy for me…… but for the most part, she doesn’t say anything about my pregnancy. The last time I saw her in person (two months ago) she flew into a drunken rage at my boyfriend, so we haven’t returned to visit her. To be honest I’m kinda hesitant to see her until after the baby is born. I can’t handle her emotional instability during my pregnancy. When I talk about being pregnant on the phone to my mom, she never says anything about my baby. She never gives pregnancy advice, she never wants to talk to me about being pregnant, or about my baby. She gives me zero affection about my baby. Today I told her I was four months already and she seemed really surprised that so much time had flown by. She said “you should start feeling it moving soon” and I said “yea I do, especially when I drink something cold or eat sugar, I even googled it and found out the baby can get a sugar rush”, she said that doesn’t sound healthy, and that was kinda it. She was just very uninterested. She hasn’t bought me anything for the baby (she’s broke so it’s okay, honestly I’m pretty broke too so I get it). I’m happy to finally be a mom, it’s what I’ve wanted for so many years. I don’t know why she can’t be happy for me. I think she’s jealous that I left her. We used to live together, id work and pay all the bills while she drank every night. Her alcoholism was making me drink more alcohol myself because it runs in my family. Then I met my boyfriend, immediately moved out and got pregnant (on purpose, he and I both wanted a baby really badly). I think she feels betrayed that I left her. The only money she has is her social security which she spends on alcohol. But she was always so mean to my boyfriend. She’d accuse him of stealing from her…..when in reality, she was the one stealing from him. She would steal his bottles of liquor, get drunk on them, and shout at him that HE was a thief. I wish she was normal and I wish she could be involved with my baby but I don’t ever see her wanting to change. If anyone has any advice it would help me so much. Im crying because i love my baby and if she doesn’t well i dont even care