I don't think it's unusual or odd. Women are 'programmed' to pick up on even the slightest of changes in people. Something to do with prehistoric times when body language was the main form of communication. The women in the tribe knew exactly what was going on with each person. I've got a book about it somewhere.
<<rummages around in bookshelves>>
<<finds only Mr Men, Thomas the Tank Engine and Go Diego Go books>>