Thief
In the video, the woman can be seen opening the refrigerator and helping herself to the food inside, drinking directly from the packaging of the various beverages. It was revolting, but at least Joe was able to figure out why his groceries kept disappearing.
Her Bounty
The odd woman opens the pantry and searches inside as well. And, despite the door producing a loud crack as she opens it, she appears unfazed, finally fleeing with handfuls of plundered food.