I just realized why is celestia here?

10982662
She is a mare, like the others, working in the casino. Her specialty is security detail. She keeps her little ponies from making trouble.

Octavia's magic went in Celestia's way.

This felt confusing. As if Octavia was a unicorn here (instead of earth pony). But there is no clear reference to any such trickery, so the action felt a bit difficult to fit into the scene. (Could confuse DJpon3 though but memories seemed to be the source and not magic.)

10985828
This looks like my brain failed. Fixing!