Hmmmmm, it does sound as though she is detaching herself. Perhaps this actually might be reason for your attachment - you want some sort of attention and you apparently aren't getting it.

How often do you expect to see her? How does her being away one week a month affect you? I assume she has some sort of plan - and has communicated it - for what to do in the interim. If she hasn't that seems highly unprofessional to me.

I can see how frustrating your session would have been - especially if you were paying for it out of pocket.

My own feelings regarding email are pretty severe; I don't believe in them btween a health care provider and client. BUT, if this is a method of communication you two DID agree upon then this is high bothersome she is not responding. Very upsetting. My only recommendation is to ask her to clarify what methods she DOES want to undertake.