Buddy she 'obviously' likes ya, next time u get an oportunity like that to hold her hand...do it!!, she'l then know you like her! dont be shy to go and knock on her door, im sure shes sittin in there waiting for u to cum!! they all do! i have 4 sisters and alot of girls as friends, trust me! but dont try and see her everyday and call her ALL the time and seem to keen. u have to make them work abit aswell so also play a little hard to get! it drives them nuts!
good luck