When is jongedame used?
it's basically the same as ''young lady''. It's quite formal.
I've been taught that ''rokjes'' is the way to refer to skirts, as ''rokken'' implies something dowdy and not fashionable. Duo might not recognize that, but is it otherwise correct?
Rokjes to me would mean short skirts.
I guess it depends on what your idea of fashionable and dowdy is but there isn't a direct connection.
When is 'meid' used in place of 'meisje'?
My understanding is that "meisje" is a neutral word that refers to a girl while "meid" is more intimate, something you can use to refer to your friend.
Het meisje draagt rokken. Not accepted !