Bless her little golden blonde head. Jack grips the pipe firmly, takes stock of the situation, and pops up for only a moment to bring it down hard on someone's shoulder before crouching down over Prim again. "I'm going to get hurt if I'm focused on you." He doesn't say it to be mean, but it's true. She can't defend herself, and he can't just leave her to be squashed.

He's thinking on his feet, and he's pretty sure he's got a way for her to feel useful that doesn't involve him getting the shit kicked out of him. "You want to help people? We can do that." He doesn't bother explaining, just wraps an arm around her waist and hauls her up, making a break for the door and swinging his new pipe with lethal accuracy at anyone who tries to get in his way.

The hallway. He just has to get her to the hallway. He can defend one doorway.