Just an FYI: If you are tempted to tell her that you were "wrong" in doing something, you are attempting to take ALL the responsibility.

Was it inappropriate? Perhaps. Was it "wrong"? No. It was what you did, in light of the circumstances, opposed to your best ability to do something different.

She does need to eventually understand that she needs to be more open and transparent with you, regardless. Her actions are not "wrong" either. She simply has not come up with a better choice.