I'm in a similar situation, but somewhat opposite. I have no trouble with my feelings that are directly related to my trauma. In fact, those feelings are so overwhelming, I can't even bring up the memories or talk about it without being completely triggered or turning into a pile of mush.

On the other hand, I have been a pro at disconnecting from all other feelings in life. I must have asked my T a million times that just once, I would love to feel happiness, love, sadness, fear, etc., to anything NOT related or triggering of my trauma. That's something we are working on now.

As a result of our work I have found that just talking about things, answering the age old question "how does that make you feel" and just taking more time to be alone with myself, either listening to music, walking outdoors, etc., has helped me become more in touch with my feelings. So yes, the more you keep working with your T, the more you will be able to become more in touch with your feelings and you will be able to express them.