I went to my current T without telling him I needed to process my relationship with T1. At the first session I told him clearly what I needed (that he shouldn't criticise T1, that I needed him to just be there while I decided whether or not to return) and he was fine with that. He responded very well. The one time I thought he sided with T1 (a year later) I told him it upset me and he apologised. I hope she works out well for you Murton.