Why would this chick i dont even know do this?

i go to the gym almost everyday and theres this girl that goes to the same stationary bike thing everytime. i never even look at her, but i can tell that sometimes she watches me. now, im not an ugly dude at all and i think shes pretty cute. but what she did was go to another eliptical in the other side all the way in the back...so wtf did she do that for? was i distracting her or something or was she repulsed by me?