This is a kind of conflict that I'm sure you don't need. A parent - child rivalry is never pretty. It sounds like you're counting down the days 'till you get out of home, but it doesn't neccessarily have to be like that. It is apparent that you both have some strong feelings of dislike for each other. That much is obvious. It also seems like you are both getting too cought up in this rivalry to worry about yourselves. Perhaps there's just something that you don't like about her which isn't getting addressed. Is there anything that you do like about her? If so, it might be a good idea to tell her. I suggest something like, "look, there are many things I don't like about the way you do stuff, but admittedly, you do *this* really well."
This sort of thing helps to ease the tension and stress of the whole situation for both of you.
-------
99% terror free