Not a single cut or scratch?

Not yet. So far, all she's encountered is a smooth, flat pane of glass.

If there are any jagged fragments that aren't moving away from her foot at high speed, they may collide with her in the near future.

she's walked barefoot all her life so I'm pretty sure her feet can withstand a few pieces of broken glass without getting injured...

plus since when was logic so relevant in fiction anyway?