You didn't do that though. You turned your back on her and walked away for 10 minutes without having scheduled a return visit.
I mean, yes, if you're both doing this then you're both hurting each other. Someone has to stop the pattern and if she can't and you can't then it will keep repeating.
Literally if you wanted to schedule a 10 minute followup, then say so.
She comes up to you and says something upsetting? Then say, "Hold on, that's too much right now. I need a few more minutes." Or you seriously need to go to a counselor who can mediate for you since neither of you appear to be doing so yourself?