Support needed

Hi! So I’ve never actually spoken publicly about my mother, and bear with me because there so much to share. I might be ALL over the place. So my mom, I’m pretty positive she’s narcissistic and bi-polar. But need help putting the pieces together. I’m 21 (f), and moved 7 hours away once I turned 18. I always wanted out of that house, talking to my mother feels like a chore. I call her and she constantly speaks of killing herself, all her “medical issues”. i text her “wyd” and she’s like welll i got no one to talk to… my life so sad…. might as well kill myself….. my bones hurts… yeah dr said i’m gonna die soon… i don’t have much time left…. you kids gonna regret it…. i helped everyone all my life and my kids do the opposite…” She called me up, insisting I am a dead beat child. Sometimes I feel bad, but it’s hard to feel bad for someone who 1.) doesn’t do anything to help themselves and 2.) constantly bad mouths me. When I was around 8, she married my stepdad who was very abusive toward me throughout childhood (I was often beat, but my mother didn’t listen nor care). Then for awhile, he also would beat her occasionally in front of me as a child. They’ve been married about 12 years now and she says she’s gonna divorce him but then never does. She relies on him heavily for everything. My mother hasn’t worked since I was a kid, she lives off government benefits, social security, food stamps, child support. You name it, she’s on it. And to keep her home, she kinda needs him even though he’s incredibly narcissistic as well, but they feed off each other just as equally. It’s hard to even have a conversation with my mother, ALL she talks about is herself and how bad she’s doing. Constantly tries to get me to move back home, tries to make me break up with my boyfriend. Insists that I have become a terrible person who doesn’t care about her at all. She is so exhausting to deal with, she insists that I do not care about her, but she does not care about me. Not one bit. She only talks about herself, she doesn’t care how I am doing. It’s not in her nature to ask me and my siblings how we are doing. It’s like she wants me to move home so I can be miserable with her. She doesn’t want anyone of her kids to have any more than she has. For 21, I’m pretty financially stable and live a decent life. She hates that, she hates that I have money, a loving boyfriend and a life that doesn’t revolve around being miserable. Does ANYONE have any advice on what to do with this?