Help!!!!! ne one lols plsz?

so theres this girl i go to school with, she's a but she's really shy. her locker's right around mine so ive seen her look at me a couple times and we've exchanged words once or twice but not very often she laughs at the dumb things i say and today she walked ped my job she didnt know i worked there and she smiled at me and said hi i said hi too and she kept walkin away after kinda lookin down? does she like me or what idk?