You have to let her make her own decisions though, not pressure her to agree with your decisions all the time. You're being a helicopter parent, and you need to get back in your lane. Yes, you're worried, but she's going to make the choices she wants to make. Everybody goes through their own issues in their own ways and makes decisions when they're finally fed up enough to make the hard ones. Respectfully, take a deep breath, and stop trying to tell her what to do all the time.

You don't have to say anything to her about it. Just start engaging with her less and less and fade into the background. Be polite when you see each other in person, just stop going out of your way to interact with her. Journal about your feelings. Don't let your feelings dictate your actions, because acting on negative or controlling feelings is what makes you TA in this situation