I would say neither. Many T's choose not to have further contact with ex clients after termination, but that's not to say it is foolish to ask. You wanted clarification on those issues and you had every right to ask for it. Her silence after a month suggests she won't respond. She said some hurtful things and it doesn't sound like she handledthe termination particularly well, but I think it would probably be best for you to try to move forward, and accept you won't get the answers you want from her.