Cat Sitting, Day 2

So I go over to feed the cat with K and B this morning and the cat is in its pan when I arrive.
I settled K and B at the kitchen table and told them to leave the cat alone, as I cleaned out its bowls and replenished them.
The cat eventually meandered out and after  stopping by his bowls went back to his spot in the window. K brought his DS and was content being oblivious, while B was interested in the cat. I introduced the two and went to get my Sudoku book, when I heard the cat hiss at B. Nothing happened, but B kept herself away until I re-introduced them.
We stayed an hour or so. The cat drank all of his water and half of his food during my time there, so I refilled the water and rotated his food bowl.
Didn't see any vomit. Cat should be fine until evening. In the meantime, I have to attend to my choirs around our house.