Hello Alistare: Well... I'm certainly no expert with regard to these sorts of things. It's a complicated situation. Ideally I think the best course of action would be to talk this over with your foster daughter & then for the two of you to meet with the therapist together. Your foster daughter could then, with your support, tell the therapist what occurred.

Of course that all presumes your foster daughter would be capable of talking this through with her therapist. (You mentioned she has severe issues.) Alternatively, yes, I think it is probably necessary for you to disclose this information to the therapist. However I think it would be important for you to let your foster daughter know, ahead of time, you will be doing this & why. Also, since this is a foster child, I would presume there is some sort of social worker involved, perhaps from the county or from an agency that places children into foster care. I would presume you would have some obligation to advise them as well.

I see this is your first post here on PC. So... welcome to PsychCentral! I hope you find the time you spend here to be of benefit.

I don't know, of course, if you're here simply seeking advice with regard to this particular concern or if you plan to hang in here with us. However, should you be planning to continue on (we hope you do)... may I suggest you introduce yourself over on PC's New Member Introductions forum? Here's a link:

https://forums.psychcentral.com/new-...introductions/

There's a lot of support that can be available here on PC. The more you post, & reply to other members' posts, the more a part of the community you will become. Plus there are the chat rooms where you'll be able to interact with other PC members in real time (once your first 5 posts have been reviewed & approved.) So please keep posting!