I don't know all the circumstances. Are your T and instructor both through a college you go to perhaps? Maybe they have another agreement in effect? Perhaps you did sign something to that effect, if it's all through an institution. With that said, it seems to be on the edge of things...and she should have discussed it with you before doing or saying anything imo.

There is what is called "Professional Confidentiality" where professionals, especially psychologists, psychiatrists, and medical doctors agree to discuss joint patients with each other and not betray the information to anyone else or in another way. Now though, you usually sign a paper that allows it anyway.

I don't follow with why the instructor could have contributed to an overdose? I hope I'm missing something here We all make our own choices, as you learn to respond better to stress and untoward remarks and events, your choices will be less harmful to you. TC!