What do i do know? Help?

Okay so i saw this girl and i wanted to know her name. I asked her cl if they knew the girl and they told me her name was Justine or Roxanne. So the next day, i asked her if it was justine or roxanne and she say why? and i told her i just want to know and then she said, okay and she left. I saw her face and she looked like scared or something like that. I haven't talked to her since then, what do i do know? Thanks :)