Nina was scouting around just to see what she might be able to find in a store like this one, figuring most of the useful items would be gone, but one never knew. And, definitions of 'useful' were pretty wide, so for her purposes, it could be far different as well.
She heard sound and wandered in that direction - only to get caught up in some kind of trap. She hadn't fallen victim to one of those in months, normally too careful to do so, but in this case, she guessed she'd let her guard down because she'd actually seen more than one seemingly functional human beings. She let out a cry, and struggled, though stopped soon enough, knowing it was just going to waste her energy. She needed to think, first.