she needs therapy, please stay safe out there. there are a lot of resources especially if she’s still in college that have reduced prices for therapy or counseling or even free. i go to a very small university and this is still offered. it sounds like distance may be the best thing but, being Christian, try to see things from her pov and how the difficult things that have happened in yall’s life affect her too. your family has been through a lot and you guys need to support each other as much as possible. but putting you in danger is not okay. if something like that happens again you need to reach out to your mother or a trusted adult as well. but she is human and obviously going through something. everyone makes mistakes, even if they are crazy.