Maybe write about something else that made you the way you are.

and I wonder if by saying she was ok with people talking about bf/gf issues, she was just signaling that it is ok for you to talk about that if you wanted. If I remember correctly, she knows that there is something that you both do and don't want to talk about.

What if she is asking about that guy because she senses there is something wrong there?

If she's ok with emailing, go ahead.