How to get my older sister to be nice?

I am 11 and she is 13. Everything she says to me starts with "God Emma". Whenever she says anything to me its mean. I got myself a bowl of Mac n cheese for lunch today, and she sees it and says "God Emma, theres going to be nothing left for us"! We all had to get drawers from my moms dresser to put in the basement, I grab one, and then head down to the basement. When we get there she says" God, if Emma just got two, we would have been done faster. You're so lazy!" when she had one as well. What I want is her to be nice to me, and for us to be great friends. I see my mother laughing with her sister when we vist, and think'Wow. Me and Kaylee will never have that'. HELP???