I believe it means that if she's afraid that she'll show she's afraid (like back away from the stranger or animal) or if she's mad she does something to try and calm herself down. Or if she's overstimulated she does something calming. It seems like a weird thing to worry about at her age. Though DD once got docked because she was TOO friendly and didn't show stranger danger.
Never gotten any sort of development check from our daycare, but how old is she? Managing own behavior isn't something I would expect to see really until at least 18 months.