Your therapist is probably still trying to figure out just how connected you are to your feelings and thoughts. It will take her to some to learn how to ask questions so that you can answer them.

My therapist took awhile. She knows not to ask me "How are you feeling?" kinds of questions. And it also took her to some time to realize my "I don't know's" are not a sign of repression or reluctance to speak. Therapists, I think, are so used to working with clients that are repressed that they don't know what to make of someone who is naturally alexithymic. So when you say "I don't know", you need to let her know that you really don't know.