That's harsh, and I am sorry that you were hurt. I love you tons girlie, and I feel bad when I watch you go thru these extreme emotions with your t.
I remember the boundary thing going back a while with you. So, I looked out of curiosity, and right about this time last year you were banging your head because you didn't know if you were her favorite or not (when you fixed her bracelet). That is really important to you. It can't be simply professional, it is either you are her fav, or she doesn't care. (she's the best t in the world, or she's bat sh i t crazy).
There's a middle ground Chopin. She really hasn't been steady enough with her boundaries, but she would have to be fort Knox ...I think you require firmer boundaries than most (so do I) (it's because of your intelligence). She's a t. She doesn't have to be your bff to help you. She doesn't have to be enthralled with you to care. You don't need to tug at her heartstrings to get her attention, you've paid for it already.
True maternal love is neither manipulated nor bought, it just is. I am so sorry that your mother didn't show you that.