Does your therapist know your 9 year old is your protector alter and puts up an angry front as her coping style? Perhaps you need to be honest with your therapist but do it now only if you think you can remain stable while he's gone. If not, you could always tell him you have something to discuss with him when he returns (and take several sessions to do it if necessary). I would discuss this week whatever will give you the most stability during the next month.