Some undeniable signs that she is definitely flirting with you:

Here are some of the signs that signify that she is definitely flirting with you.
1. She keeps talking to her friends but has her eyes on you.
2. She always keep walking by.
3. She always draws attention to her mouth.
4. She always singles you out.
5. She mimics the movements you make.
6. She always plays with her hair.
7. She touches you while you are together.
8. She makes eye contact with you.
9. She enters your personal space.
10. She always walks up to you to talk.