Once the Mother's arm seems to break, Zangetsu springs off of her, finding a spot in the air to observe -- ready to catch or carry anyone who falls off. He starts to go for Syrlya, to pry those cold fingers from his poor broken body, but Lambert is on the scene and successfully gets him to safety.

The Mother falls, poisoned by the iron. Zangetsu can feel her soul crying out, and it is great. Fuck this bitch for everything she'd done to him, to his allies, to his friends.

But... still...

"YO! HOTPANTS!" he yells at, presumably, Ignatius, "WHAT DO WE DO NOW?"