Actually, there was some fecal incontinence during the first week while she was recovering from the op. Little 'nuggets' dropped around the house as she obviously didn't have any feeling or control. She would stare at them with a kind of 'Ooops, have I just done that?' look on her face.
I got into the habit of walking around staring at the floor all the time like a soldier looking for IEDs. It was necessary for me to be the first one to visit the loo every morning to do a 'sweep' before a partially sighted DH blundered around in his bare feet 
Millie's bottom seems to be functioning normally now so I'm looking forward to my morning
in bed tomorrow.