What should I do? Please answer!!! 10 points! (Girls help)?

If you like her and she likes you kinda sounds like she might. And since you don't have texting why don't you ask her out over the phone. Call her up the good old fashion way and ask her out. No other way to go about it since your graduating. You could also bring her flowers on graduation day. That way she knows you still care and then call her and ask her out.