Hi Zeene,
When I was in college, something not too different happened to me. I ended up hospitalized, and I was forced to withdraw from school--which devastated me--but in the end it was a good thing. A very wise and patient psychaitrist told me that my mother was in an elite corps of the world's most difficult people, and that I would have to disengage from her in order to be myself. It was good advice, and true, but even more than that, I'll always be grateful to Dr. G because he was perhaps the first person in my life to understand. The fact that my mother lied to me and about me only informed Dr. G's opinion of her; he saw right through her. She could not manipulate him, which infuriated her. She has never really forgiven me for the episode, but that is not important compared to the benefit I took from it, though of course her behavior hurt immensely at the time.
So I guess I'm saying that everything you say you feel is valid. But you seem to know that. I'd just like to suggest that maybe there's something positive that you can take from this experience, something completely separate from her behavior. If I were you, I wouldn't worry too much about what she said to others about you. They may not have believed her as readily as you would suppose. I would focus instead on unravelling the lies she told you about yourself, for those lies can interfere with your ability to see, know, and value yourself for who you are.
best,
daylily