((soexhausted)) - I do have experience with suicidal thoughts being legit as well as being manipulation (I actually pulled the "then I'll just kill myself" card when I was using).
IMO, if anyone tells me they want to kill themselves, I'd call 911. Many people here have done it and the A usually gets tired of having the cops called on them. If they're just manipulating, no harm done. If they're serious, you've called people who are qualified to do something about it.
I'm sorry you had to go through all of this, but I know, for me, I finally hit MY bottom with my A. It was going through stuff like you did one time too many.
Do something special for YOU, give yourself credit that you are aware of what happened and all you did was give her a ride.
Hugs and prayers,
Amy