If I were you i would probably feel frustrated that Ive tried everything and this little guy looks at me like I'm from outer space. It may just be that you're not mom. It will probably pass if you leave it long enough, but it's hard to work all day with someone that doesn't like you. Really, that's what's happening. You're forced to work all day with someone that just doesn't seem to like you. (at least that's the way it's coming across) It sounds like you should be raising her fee's regardless. I hope she understands and doesn't take it too hard.

I wish you all the best and I hope you can replace with a family that is amazing! Always another one around the corner.