Why is she still talking about me after I asked her out?

There’s a girl I had my eye on. She was always really nervous and shy around me, especially compared to our friends. Sometimes she’ll even freeze up when I talk to her directly.

Recently, before the semester ended, I sent her a message asking if she wanted to get coffee. She said she was quite busy with exams, which is fair enough, I am too. I wished her luck with them and left it at that.

I was minding my own business later on when I heard her giggling nearby with friends. I heard someone ask her about something and she said “it’s been a week since he asked” before they noticed me walking up the stairs.

They pretended to be looking at a piece of paper so I know the conversation was about me. I kept walking and pretended I didn’t hear anything. Eventually I looked back and they went back to conversation, she was giggling again.

The reason I’m asking is because I want to gauge what she’s thinking now a week or so later. Is she bad-mouthing me or asking their opinion about it?
Why is she still talking about me after I asked her out?
Post Opinion