"You'll be in her bad books?" You don't want to offend her but she is hurting you.

If this person cares about you then she would care how she is making you feel. If she is important friend or part of your family then it would be productive to have some kind of discussion with her so that you can have a healthy relationship.

If this person is there as home help then maybe it's time to see about getting another person who doesn't make you feel anxious. They are out there.