After interacting with others while dancing, I'll bet she thought you looked pretty good in comparision. Sometimes they get bored and don't realize how good it is at home until they either are about to loose it or they get to see close up what the alternatives are like.
I hope the night turned out well for you.
>43 years of marriage--My wife and I are now closer than we have been in decades. I believe that my SSM is over.