Actually, the correct thing to do would be to discuss your frustrations with her and ask her to help you maintain focus on other aspects of your life than your coursework. Then, see how she addresses your concerns. Right now you are doing a lot of thinking for her. Maybe you are right, but until it comes out of the horses mouth, you are only assuming. If it goes badly or doesn't change following an open discussion with her, at that point, you can consider changing therapists with assurance/confidence that you did everything to communicate your needs and they weren't met.