She just stares at his lips, and when we bump in to each other she gives a eye contact for few 5 seconds or something..
Most Helpful Girl
Between the lips and extended eyecontact upon first meeting, she is into you and to shy to act on it/show it in a more obvious way. I am often afraid to meet a guys eyes if I really like him. Eyes are the window to the soul and can betray your feeling with ease.
Compliment her the next time you see her and she is she becomes more shy or more bold. Either is a good sign. XD