It's not important to know this stuff right now, but they're basically mini portals. Had she made those quickly enough so that the arrow would actually pass through one of them (the arrow basically flew past all of them), the arrow would've entered a portal, and exited through another one she would've made near her, facing the ground.

If this becomes important knowledge, it will be explained better. :)

Thank you, I guess that was exactly what I wanted to know :)

Along with everyone else watching the thing, it seems!