Yes, Mizzuno, Dee is right. It sounds like she was using you to blame for her book not being sold in your store. It wasn't your choice and she didn't want to hear that.
As far as feeling out of place, I agree that you're feeling anxiety. I get like that too and it can be disconcerting. Have you ever tried meditation? I find that it allows me to find that place within myself, which is full of love and acceptance. It might help you.