Do you know any professional organizations that your T belonged to? If she is a psychologist, she may be listed as a member of APA. You can also check with the state's registry of mental health providers, usually through your state gov web-site.

Another option might be to contact your local mental health association to see if they have a publicly accessible provider directory. Worst case senario is that if it isn't public, they may be willing to pass along your contact info to her.