Educating your T about an issue means you get to deal with it on your terms without your T assuming, generalising or acting on outdated, wrong or irrelevant info.

I have a rare sleep disorder and my T didn't know about it. Telling him about it, answering his questions and explaining it was a great experience for me as I was used to people being dismissive.

If you fear she sees it as a phase, that sounds like it's coming from transference. Have other people seen it that way or made you feel you should? Sounds like something important to explore with your T.