Newtus, I think you should let her know that you are hurt and upset by her actions. I don't think that's unreasonable. Just do it in a calm manner and let her know that you need to feel safe sharing things with her, otherwise your time with her is pointless. If you are worried that she's going to call 911 on you for everything you share, then how can she help you heal? She can't. Tell her you'd rather she work with you on coping skills for suicidal thoughts rather than threats of hospitalization.
As for me, I am sad Harold Ramis died.

He was a great comedian and a lot of his films, whether as an actor, director, or writer, are among my favorites like Groundhog Day, Ghostbusters, Orange County, Knocked Up, and many others.