Sorry to hear that. That woman was very cold, rude & she lacks empathy.
It sounds like she has some serious issues. Don’t talk to her anymore. Don’t expect sympathy or any empathy from people like her.
Some people think that victims of bullying deserve to be bullied because the victim somehow ‘deserves’ to be bullied for being different, ‘weak’, or something like that.
You didn’t do or say anything wrong. Some people won’t do anything to stand up to a bully or do anything to protect a bullys victims as they’re afraid of being bullied too.
A lot of people are cowards & unconcerned with anything that doesn’t affect them directly.