1. I'd just say please give me the time to adjust to this difficult change. This is going to take time Sweepy. You know that. Don't put any expectation on yourself to reach "trust" on any timeline. Also, don't put any expectation on your new T to somehow make you "trust" any time soon. You need space. She needs to be given the benefit of the doubt at first. The temptation will be to nitpick her every word and move to find reasons not to trust her. You are BOTH going to need to have great patience with each other during this process. Neither one of you can do this alone. Ask for patience.

2.This one I have no idea how to answer because I'm not all that up on the details of your needs other than this T change. If you are not comfortable talking about really heavy issues at first, that might be something to let her know. Maybe you just need to get to know each other a bit for a few weeks. That would be a trust building exercise in itself.

I might consider taking photos that are important to me as prompts for meaningful thought and discussion. That gives you control over content to a great extent, a bit of forethought that might help you feel more comfortable that you will have something to talk about, and allows you to ease into talking about those people, places, and things are important to you in some way.