Syag – Obviously I don’t know the story here but is it possible that when she delivered that threatening message to you from the other person, she thought she was giving you a head’s up and protecting you?
From your posts, it sounds like she has no clue that she hurt you. You asked her why she would would tell you such a thing but maybe it didn’t register to her that you are actually upset. Did you say outright that you are upset? Some people need it to be spelled out for them (slow learners).
I also don’t get the connection between the book (and its messages) to your story. It doesn’t sound like she had that in mind when she gave you the message. Maybe I’m just totally missing something.
Anyway, lots of times people hurt you and don’t even realize it. Maybe she just realizes from your comments that she made a poor choice in repeating the convo to you. I don’t know. Just guessing here. Some ppl are clueless and others don’t know how to apologize.
I had situation a few years ago where someone got SO ANGRY with me and I honestly did nothing to hurt her. She misunderstood the whole thing. She called me up screaming at me at the top of her lungs. Never had anyone done that to me! She later told me she knew she was wrong and should apologize to me but wasn’t ready yet. She was never ready. She is now no longer among the living. At least it turned out that we were on speaking terms (we were in a store together and just started talking then she invited me to her simchas again) before she passed a away (btw- she wasn’t sick- it was sudden) but she never apologized. I did find it in my heart to forgive her after she passed away. Did it for myself and for her neshama.
Maybe spell it out for this person – give her one more chance to apologize. It’s scary to think it could be too late one day. Anyway, I don’t know how much this person means to you so it’s your call if you want to write her off or try to be friends again (it also depends how close you were with her).
In any case – hatzlacha rabba – and may you only be surrounded with true friends and family who only have your best interest at heart. <3