I can only imagine how hard this must be for you. I really don't have any words of advice other than this is a great place to look for some support when you need it. After spending 6 years with this T it is likely that you have really built up a deep and trusting relationship. She will likely want to help you as much as possible but it's understandable that you would be reluctant to want to tell her how much it is affecting you. Seeing another T to help you deal with this might also be helpful for you.