Asked a girl out in a restaurant, she said no, but she kept looking afterwards?

What does this even mean? I asked her out 'found you cute, any chance for your number?' she said 'thank you, but sorry no'.. then as she was leaving she kept looking at me and on the way up the long steps out she still kept looking. obviously i didn't pay to much attention to her then just gave he a glimpse.

Asked a girl out in a restaurant, she said no, but she kept looking afterwards?
Post Opinion