Blouse thief
Nanny cams are often quite useful in working out if your hired sitter is trustworthy or not. In this case, the answer was: definitely not. There is always the danger that letting people into your house while you’re not there, whether workmen, cleaners, or sitters, might result in theft.
Usually, the thief is a little sneaky about the whole thing, perhaps hiding the stolen objects in their bag, or sneaking them out to their car while you’re not there. In this case, the nanny decided the only way to get the stolen blouse out of the house was to wear it! That takes some confidence.