She is keeping your therapy about you.
She may not have had therapy - she may be in the 13% who didn't/don't. I don't think that means she can't understand what you are going through. That's what her education, training, and experience is about - understanding and empathizing.
I can understand the pain of divorce, even though I have not been married or divorced.

But you might talk to her about how you feel when she doesn't respond. Because that is about you, and how you feel, and what you want or need.