If shes open for conversations she will be open for more than that. Touch her and you will see that shes perfectly okay with that and dont pull away or anything. But you will get out from her only yhay much as much you think to deserve and dare to take. Belive me its not accident that you see her so often. This is the ussual girl thing - being near looking and smiling. In this passive way they are waiting for some direct attention and action. If you hear her saying something good about you to her friend then its 1000% sure she likes you.
Doubt kills more dreams than failure ever will