I think the only way to handle this is to speak to the person concerned, about how you feel. Use lots of "I" statements and ask her to assist you as to how you can feel more comfortable in the situation.Then ask the owner to explain the 'rules' to you more carefully, so that you can't have the same misunderstanding again. If you don't speak up, the people will continue with their bad behaviour and you will continue to feel lousy. You don't have to be their best friend - you just need to have a working relationship with them.