Ok so about 3 weeks ago i was assigned a group project and this girl asked me to join her group. She then asked for my number so we could contact one another obviously. We conpleted the project a week ago and she continues to text me every 2 days or so. She usually says hey and asks what am i doing. I usually don't respond fast because of lack of signal. I can tell it bothers her because she always gets on me about it. Also everytime she looks at me she smiles and keeps eye contact. She never does any of this with other guy in our class
She probably likes you and is trying to force a connecting so she can (eventually) become your girlfriend. Just confront her about the situation (aka her texting you although you guys have no connection), by saying something like "let's be friends". Depending on how she reacts is how she sees you. Because if she really was trying to become friends she'd be happy, if she liked you she'd be slightly sad (off put?) or say yes too energetically and too fast.
You probably already know the answer. Don't lead her on. If you are not interested back off and don't bother texting her at all. She is interested in you and wants to probably go on a date or hookup. Decide what you want.