Why does she try to get my attention and then reject me?

bball147
I barely knnow this girl. We had a few very short 30 second convo's. But anyways, I asked her to lunch and she rejected me. I'm wondering why she would reject me when she always tries to get my attention by walking right in front of me and staring at me. She NEVER initiates a conversation(only hello's). But she honestly seems to put in more work to get me to notice her. She usually tries to get my attention when I'm sitting down. But when we're walking and passing each other she just keeps on walking when we say hi so I don't have a chance to start a conversation with her. I am REALLY confused.
Why does she try to get my attention and then reject me?
7 Opinion