I think she only has the right to do it, if she feels you are in danger.

This happened to me this past winter. I had a plan and a date, T said he was allowed to break confidence in this case and tell my h my plan. He told me he would do so, unless I told H what I was thinking. It that case, it was merely to keep me safe. Had I cancelled any appointments at that time without a legit excuse, I am sure he would have tried his hardest to get me in there.