The yarn was a combination of wool and alpaca, and some artificial fibers, and I was ONE double crochet short to finish the final round. So I dug in my stash to find something similar in colour and weight, and added that one more stitch. It's noticeable "in real life", but not in this photo. And I know her cat won't care!
(And in a side note - there are some things I'm still struggling with in formatting. How do I add a smiley face?)