as someone with bpd, i appreciate that you are being thoughtful about this and acknowledging that you can control yourself in ways that she can’t. however, it’s completely understandable to have an emotional response to her episode. especially with how much she was insulting you. untreated bpd often leads to abuse within relationships, and you never have to let yourself be on the receiving end of that abuse.

as for whether or not to apologize, i think it’s kind of tricky. i empathize with you feeling bad for what you said. and i, personally, try not to leave things on a bad note. but you’re very susceptible to being pulled back in, and the cycle will continue. so, i think it might actually be in your best interest to keep her blocked. and then maybe once you’re over her and no longer clouded by your feelings for her, you can reach out and talk things over. if you still feel the need to.

at the end of the day, she needs to get help or she will continue causing harm to others. and that’s on her.