How about some chopped liver or scrambled egg to tempt his appetite?
She had chicken and sweet potato for dinner last night, but she has always been a bit fussy so it's hard to know whether it's still illness or fussiness.
She is a poser though, try and get her to sit at your feet is difficult, ask her to sit on a tree stump, a log or a bench and she's straight there!
Glad to hear pup's surgery went ok @Aria20