Hugs. Been there, done that. I have done this a lot actually. Originally I would find an excuse, now I just fess up to what I am doing and what I need. Its so much easier and T knows my state of mind and we can discuss it more in session later. I would recommend just emailing him and telling him the truth, that a young part was triggered and that you needed a little reassurance from him. Nothing wrong with that and he would probably appreciate your honesty.