Hello jingertee: I see this is your first post here on PC. So... welcome to PsychCentral! I hope you find PC to be of benefit.

I'm sorry you are faced with this dilemma. I don't know as there is a lot I can say with regard to this except that, at least in my opinion, you are not responsible for your ex's actions. She has to take responsibility for seeking out the help she needs in order to deal with the mental health issues she has. At least that is the way I see it.

There is a forum, here on PC, dedicated to the subject of bipolar disorder. Here's a link:

https://forums.psychcentral.com/bipolar/

And then here's a link to an article, from PsychCentral's archives, on the subject of living day-to-day with bipolar disorder:

https://psychcentral.com/lib/living-...olar-disorder/

Also here's a link to an article on the subject of domestic violence (including threats & stalking) & what to do about it. The article seems to be targeted toward victims of abuse within families. However perhaps there are some suggestions in it that can provide some "food for thought", as the saying goes:

https://psychcentral.com/lib/steps-t...stic-violence/

My best wishes to you…