Teenager Girl Problem Please Help?

so school, just started and this girl name, Cindy, is giving a look like i am a b..... I seat 1 seat away for her, and she is sending notes to the girl who sits beside i dont know what they say but every time she the girl is ready it. Cindy is talking to me about stuff.. Uhm do you think she is takig about my behind my back? ( i am not Cindy best friend, we are just friend)