oh gosh, you are in a difficult conundrum.

This may be pretty hard; as she apparently knows your interests, what about getting her to discuss her own?

It sounds like she has possibly come to think of you as a confidant already. One way to discourage this is to not make yourself available to her at her beck and call. You need to keep that ball in your own court. You need to show her that you are not dependant on her too. The idea is she see you as your own person - one she wants to get closer to.