Hey Zoo,
I am really glad she called and actually glad she admitted that she has a part to play in this. She cannot say, "call when you want" and then when you do "your draining me"! I think she initially thought she was doing the right thing trying to be there for you and be a great person etc but then realised that actually she can't cope with being this much to probably quite a few people and she realises now that she has set the boundaries between her and probably most of her clients wrong.
If you do go back to her I think you maybe need to prepare for her to actually change the boundaries and maybe tell you only to ring when you really need to or something. It's going to be very hard to change the boundaries without it coming across as rejection for you I think.
As lastyearisblank said what really struck me in your inital post was also the comment she made of "i've never experienced anything like this in all my years of practice" (maybe not exact words) because when I imagined what that would feel like to have that said to you by your T I just wanted to cry for you and hug you. If it was me that comment would make me feel like the worst person in the world, even if she didnt mean to!
I think she has a LOT to apologise for, no matter how often you rang or contacted her! Her treatment of you has been wrong!! I dread to think what else she has said to you!
huge huggles!!