I met a girl last Friday(like 10 days ago). We went on a date that Tuesday and it went decent/good. The conversation flowed, good laughs, and we extended the date after dinner. She thanked me and we ended it with a hug. But for me, something just didn't feel right after it. I have no clue what it was... anyway, that Friday I call her to ask her out on a second date. She didn't answer. She then texts me Saturday afternoon saying how she's sorry for not returning the call...she's at her grandparents for the weekend and has been super busy(her going to her grandparents is 100% true, so that's fine...). So after two texts I told her I don't need to bug her now then and that I'll give her a call after the weekend or she can call me when she get's back to college. I didn't get a call from her, so I called her a few hours ago. No answer :/ and she hasn't gotten back to me yet. I know she didn't have classes at the time I called her.
What do you think is going on? Why would she text me saying sorry for not calling back, and then not talk to me?
This is what I think: she's shy and doesn't know how to reject me. She texted me after the call the next day because she's nice and didn't want to leave me hanging. But I'm just looking for some other opinions :)