wait, wait! you say there were things in the past you were scared to share with your T, yet you shared them, and that was a good experience, right? That is so important in my opinion!

That is supposed to teach you something, doesn't it? Think about your relationship with T throughout the years (months?) that you've known her. Think about the different things you have shared with her and her reaction to those. I am pretty sure reflecting on that would give you the answer to the question whether you're ready to share with her now or not.
Good luck!