Emotional Abuse - Break up

Hey, I'd like some advice on dealing with an aqua ex. We were together for 7 months before I broke up with her last month. We were introduced last year, and quickly got together and became hot and heavy. She was dealing with selfharm and depression, but she was very vocal about it, and often talked about how she hates people and sent death threats to a past friend (until eventually the police got involved and she stopped. She'd told me as well that if the police hadn't of gotten involved she'd of gone through with it. I always took it as her being dramatic.). Somehow, this still didn't ping on my radar. Things became very unhealthy very very quickly. I had to be available to her 24/7 in case she felt bad, and when I wasn't available she would become enraged. Claimed I hate her and wanted her to die. It took a lot of apologising and promises that I loved her to pacify her. When I noticed she was upset and asked if she was okay she'd tell me she didn't want to talk about it. Got mad at me later for not pressing her. When I did press her she'd become even worse. When we argued it often escalated to her hitting me, and I having to apologise and give in to make it stop. Would tell me a lot that if I ever brokeup with her she'd kill herself, while also saying she didn't need me, she was dating me out of pity.

Things hit a tipping point when she was visiting my family with me. In front of my little brother (who's 12 and was alone with her) she sliced up her arm without warning and my mother had to clean it and bandage it. Refused to go to hospital. She didn't understand why I was so upset, saying she either did that or she killed herself at my parents house.

I couldn't deal with it and I broke up with her. I still care about her though, as fucked up as that is. I still want to make sure she's okay. She's gone completely off the rails tho now. When we pass eachother at uni she insults me and/or screams at me. She regularly drunk textes me about how much of a piece of shit I am and how she's going to kill me. I get a death threat from her once a week, maybe more. How do I help her? How do I get her to stop and seek help, or at least leave me alone? Most aquas can't be like this, yeah?

She's an aqua, and I'm a leo.

aquas like leos but she needs to go into a mental asylum. always threatening to kil others and herself and hurting herself infront of kids, she needs professional help that you cant provide. send her to a mental place

I know she's completely off her rocker, but there's still a very big part of me that wants to make sure she's okay. I'm just kind of lost, jumping between blaming myself and then realising that wow, she is/was absolutely crazy. There's not much I can do for her in my position, but I have friends who still hang out with her and I'm trying to encourage them to encourage her to get help. I don't know what to do, or how to even get her to let me go. Should I try to talk to her? Or text back when she's going off at me?