What do you do when the owner doesn't tell you about cameras?

The owner did not inform me that there were video cameras and then was very upset when my husband came over with me to let her dog out. I was not told I could not bring him, but she was very upset I had a guest over. I understand I should have asked, but I also am very concerned that I am being watched while at her home, and don't plan on watching her dog again, due to the high demand of needs and the lack of understanding on her part. How do I go about handling this situation with the cameras? I feel very uncomfortable in her home.