The noise doesn't escape Kanaya's notice, but she chalks it up to being one of Feferi's tricks until she realizes exactly whose voice it is. Maybe it's a learned habit from dealing with him so long, but after a few moments, her mind registers the familiar sound, enough to bring her verbal skills back up to a high enough level that she can actually talk through her rage.

"Karkat," she calls, making sure he can hear her over the sound of her chainsaw. "Please hold on, I'll be there as fast as I can!" She just needs to take care of Feferi first. Karkat needs tending to, but Kanaya can't do that safely with the grimdark troll still on the loose.

She cringes as the pain in her leg begins to seep into her awareness. Well, that certainly isn't good. Kanaya casts a hurried glance around the dark room, saw at the ready, in an attempt to pinpoint Feferi's location -- and, more importantly, to make sure she's not anywhere near where Karkat's voice had come from.