I send a text message to a girl, and she always replies every few hours. What's the matter?

1. Maybe she pretended to be reserved and didn't want you to know that she was waiting for your news, so she came back late on purpose. But it shouldn't be so late.

Maybe I just don't have time. I'm busy. Maybe, as upstairs said, my mobile phone is often not around.

Maybe she doesn't know how to answer.

Maybe I didn't want to go back, but it was not good to think about it, so I went back after a few hours.