What does this girl really feel?

Okay, i am a senior and i have known this girl since sophmore year. We had cles all year. We worked after school being a techy for plays together and things. We talked off and on here and there throughout sophmore year. And now, at the end of my junior year, ( 5 days ago ), out of the blue in cl she texted me. I didnt have her number and she didnt tell me who she was. I figured it out eventually though. And we have been talking for the last 2 days all day long. Some times she is using a lot of ! and (: And other times its just " Yeaa haha ". Today, at 2 pm i sent a txt after we were txting for a few hours and she hasnt replied all day/night. So about an hour ago i sent her a text saying Nite ____ (: What does she really feel?