No you don't have any responsibility to protect her, and actually I think as your therapist she does not want to be protected. Actually I think no one want's to be protected in the way you're talking about.

In my personal life, someone I know who is like a mother to me is dealing with a late stage breast cancer. I ****ing hate cancer. God how much I love this woman, I cant stand to see her hurt. I'm curious about what is going on with her all the time, I care so much and I worry. I always wonder how her treatment is going, how does she feel, is she in pain, is she afraid, will she call me if she needs to, would she tell me if she was in pain, is she dealing with this on her own, will she let me in, does she know how much I love her, how much she means to me... I'm afraid to ask her if she's not already talking about it, and when it feels like an elephant in the room I feel like it's my fault, I go home and cry and wish I could do or say something to make things easier for her. When she's not openly sharing everything I can tell, and that makes me worry more. I want her to be selfish and tell me everything and anything I can do for her, so I can do it, so I can know her even more than I already do, because I love her!

I'm sorry you're going through this. I'm not sure how T's are trained. In my opinion though, you should be completely selfish.