Some of the kids at work are Jewish, and some of them are kosher, in varying degrees. Eloise is vegetarian at work, so that she doesn't mix milk and meat or have ham/pork/bacon accidentally.
So it was a bit of a shock to see Eloise chomping on a book. More specifically, on the farm book. To be even more specific, on the PIG picture of the farm book.
And it was the main day of passover.
Keeping kosher, that one is.