She, um, sent it to the wrong address.
Oops.
Here it is, eh:
Because the Zombies still need to eat, food is readily available, if you can get to the surface to steal some. So when we can, we grab as much as possible and store it in the cooler drier parts of the sewers. The other day I was heading over to get something to eat and I saw it, boxes of Rice Krispies, Capt'n Crunch, Frosted Flakes, torn open and thrown about. A few other were there too trying to piece together what happened. I looked at the mess and said "Looks like we got a Cereal Killer in our midst"