Hello Pennywillow and

You have found a very supportive community and I'm glad you have reached out, looking for answers.
I'm sure it's very difficult to follow the psych dr.'s advice and not share the diagnosis, you've always been honest with your daughter (DD), she trusts you, and trust is so very important in relationships.
I'm inclined to side with the psych dr. on this, getting her into a more supportive environment first, but do I understand your reluctance to keep this under wraps. I don't have an answer for you, I'm sorry. Hopefully someone will come along and have some advice for you; perhaps someone who has been where you are.
Did the psych dr. have any suggestions on what you might say to her?
Again, welcome - I'm glad you are here.
~ OH