Yes, and I do get that she could always have sent a 'got it, thanks'. I still believe you might get something out of bringing this up with her especially as she made you feel unsafe and/or not sure she will be there for you.

She seems a good T and she may tell you that she never thought she ought to reply or she got sidetracked or...?? It might help put your mind at ease or re-establish the trust.

Unfortunately, I know how painful it is.