I’m basically speechless. I’ve rarely heard anything so unprofessional and just plain cruel. I’m so sorry this happened to you.
You didn’t do anything wrong. What she did was cruel. This wasn’t your fault. You could not have done anything differently. You’re allowed to cry in session and have suicidal thoughts and email if she said it was okay. That’s what clients do. She isn’t your hairdresser and her responsibility to you is way more profound than a hairdresser’s.
I hope you find a lot of comfort in your close people and a really good therapist to help you with this if you want one.