Is she interested in me at all?

she is pretty interested in you.... but she thinks you are shy.. thats why she kinda laughed because she knows you are kinda shy but she also knows that she has no reason for you to be shy around her. just open up and say hey! and asker her out! If she turns you down then accept and and walk away with a smile and confidently and she will doubt her decision..trust me! and if she says yes then.... success!!