Empty Coop is a Novigrad sidequest.

Get the quest by talking to the lady about her missing chickens. Use your witcher senses to examine the wolf prints nearby. Follow the wolfprints. Keep following the prints, across the river, and you'll encounter three little orphan children.

It turns out the kids put on wolf paws under attached to their shoes, and steal the chickens.

Return to the old women and tell her what you've found. You can try to convince her to give them a home.