[Bishop's departure gives Momo time to finish up the spell - he has to make sure that it doesn't leave a scar, too, otherwise it might cause problems when she wakes up and realises what happened. By the time the other man gets back, Momo has moved her close to her child and is cleaning up the pool of blood so neither mother or child ends up traumatised by seeing that upon awakening.

He raises his head from his work when Bishop speaks, and since he's about done doing what he was doing, straightens up from his crouched position.]

Fine, I just thought I'd better get rid of the blood so they don't wake up and see it. If you've found that stuff, then we may as well start bringing the others in.

[Since they've dealt with the immediate problem here and no longer have a prospective death on their hands.]