When I first started working with my sponsor, she told me that she would never reveal my secrets, but if asked how I was doing, would say something general like, "working on this, doing great" and checked if that was ok with me. It is for me. I am proud when she can brag on me. It is her experience too. I don't know how I would feel though if that expectation hadn't been set up front, I would feel like it was gossip.
I say talk to her about it, set the expectation. She is a person.