Don't chase her. Sometimes people want the attention and the feeling of being chased, but don't really want the person doing teh chasing. You don't want to be the chaser if she isn't all that into you, the way you are with her. It's bound to make you jealous, frustrated and sad.
So, stop texting her and calling her. Give her some space. If she has feelings for you, she'll contact you. And if she doesn't, then you'll know, and you can pursue a more balanced relationship.
