When she has her shot, Clara maneuvers herself to the side, out of sight of the thing, letting it be distracted. She spares a thought for whatever this is, a creation of the world at large or a living entity from another place entirely. She knows what the Doctor would try and do, but there's no time for it, not now.

Without thinking any further about it, she lunges forward, and as soon as her sword connects, she pushes it all the way through. The sound it makes feels loud enough to shatter her eardrums, but she holds onto it via her sword until it finally, abruptly, goes quiet.

Panting, Clara pulls the sword out, wincing at the squelching sound.

"No more looking in mirrors for a while."