My quick take on it is that it might be very helpful to you to really dig into how you felt in response to what she said and talk to her concretely and openly about it. it sounds to me like she welcomes you to do this, based on her response to your voicemail. Take what she says at face value and have the contact she offered.

Part of what you said about how you were happy with your progress but she is obviously not, that seems like kind of a cool relationship issue that also might have lots of work to do within. It reminded me of how sometimes married couples reach this place-- I'm happy with the marriage, well, I'm not. A conversation about why you are each feeling the way you are about your progress will probably really help resolve this. To do that, you have to bring back to her all the feelings you are sharing here. But it sounds to me like she is willing to listen to what you have to say, and adjust her side of the street accordingly. That's a pretty good thing for a T to be able to do. But if you don't share your reactions with her, she won't be able to adjust any further.