I don't think I read a post saying that you should outright leave her and search for a therapist to replace her, I think the majority of people here (forgive me if I'm wrong) were saying to search for a therapist on the side. Not to leave the LC, but to seek an actual therapist as well. Which sounds like a good idea.

And what happened here doesn't seem like a small thing. Your reaction definitely wasn't small and how you handled it (drinking with meds, etc) shouldn't be overlooked.