** This:
I struggle to make friends and I she was the first person (other than my husband) I was 100% “warts and all” with and she still liked me. So I think that made me think maybe I don’t have to (unsuccessfully) pretend to be a cool kid to be liked.
and this:
Friendships are hugely difficult for me (diagnosed autistic). I’m not (I don’t think) a very demanding friend - I’m happy seeing friends every few months. Texting in between. I’m quite a solitary person - though that’s partly self protection as I’ve been hurt by not understanding neurotypical behaviour.
Are EXACTLY why what she's done (not you) is awful. Truly awful. If you had a massive, strong friendship group it would be bad, but your vulnerability is lack of such a group and she's exploited that for her gain - she wanted a friendship.
She had the power and control here and she used them to get what she wanted. She decided to throw ethics to the wind and satisfy her desire for a friendship. She was the one who could say no. She's the one who knows that many (most) clients develop friendly/warm feelings for their therapist and that's normal. She knows that many therapists like many of their clients. She knows that she made you feel special by being "the one" she chose to be friends with, assuming she truly hasn't done it before/since. Honestly, it's absolutely abhorrent.
I feel bad crapping on what is a dear friendship, but you're her secret. She can't and won't be open about how she met you. If you were to ever see her with professional friends of hers, you'd feel compelled to lie about how you know her. She'd certainly lie, or be vague.
You are a sweetheart. You've done nothing wrong.
She VERY MUCH has done something wrong.