I would only go back if I could find another use for the therapist. I certainly would not apologize. The therapist is paid to keep themselves out of the room. The therapist is paid to keep her personal problems out of the time I pay for. It doesn't matter what's going on in her personal life -they are supposed to be able to handle clients negative emotions emotions without lashing out or retaliation. If the therapist didn't feel like she could control her feelings and emotions over her personal life then she should cancel and take a break.