I can relate to feeling like crying in front of T would be somewhat liberating. I have yet to actually do it. The closest I got was crying over the phone with a previous T...
4 months isn't all that long in the grand scheme of things. Perhaps you could talk with T about your inability to cry in front of her. Maybe talking about it would bring about either some relief, or enable you to feel more comfortable with the concept of crying with her?
What do you think crying in T would do for you? Is it a comfort-level thing? release?soemthing else?
I know I go through periods of time where I wish I could feel safe enough to cry around a T and get comfort just by being in the presence of a caring other. But like I said, the closest I've come had been crying while on the phone with T...

Hope you can get to a point of being able cry in T.