I can understand your ambivalence, ripley. I think it will take time for you to regain that trust with your T. But I think you will! Are you worried, even now that you have the appointment, that she will disappear again before you get a chance to see her? If it were me, with my negativity I'd be thinking like that. I'd be a nervous wreck, probably!
Yes, 6 months would seem like an eternity to a small child! I imagine you have so many pent up feelings, both as an adult and a child, to discuss with your T. I hope your session goes well.