How can I get my "friend" to stop copying everything I do?

You can either ask her sometime when she's doing something you do, "why does it seem you always do the same things I do most of the time". OR, you can just start to "pull away" from her a bit & not be as close to her as you now are. But, I think I'd "call" her on it so to say & ask her why does she seem to copy so many of the things you do ALL the time. She obviously likes the things you do, that's for sure!^