Lights ran into the room, following the loud groan she'd heard from the desks. She watched in horror as the woman - she was familiar, Lights had seen her around the Ministry somewhere, maybe with that YATI guy? - make a mess of the coffee area. That wasn't too much of a loss, that coffee really was terrible, but she'd managed to hurt herself in the process which wouldn't help her.

The other woman (the one in her right mind, the one with the Welsh-type name) was talking about incapacitating her, but the zombie girl was moving towards the bathrooms.
"I think we should try to talk to her," suggested Lights, joining the conversation. "She isn't hurting anyone but herself yet, maybe she'll come to herself if we gently remind her."

Lights would have said more but the zombie was on the move! "Let's follow her, see what she does next. She might be looking for something." She was already moving after the girl towards the bathrooms.