Wow, you guys make me feel like a freak! Lol. My wife worked as a waitress and was on her feet all day. Used to be a fairly common occurrence that after she got cleaned up that I would rub lotion into her feet and yes, even trim her nails for her when it was needed. Didn't seem odd to me at all and she enjoyed it.
I think thats sweet..I dont think its "odd" at all.
I was thinking more along the lines in my head when the OP asked like the husband says .."honey..its time to clip my nails they're getting scraggly..and the wife says O.K be there in a minute..LOL!
Sounds like with your wife she really needed the attention to her feet due to a rough day.If feels so much better for some reason for someone else to massage your feet than doing it your self.It relaxes you.
Love
Dallas