Nice (not quite stupid) mistake

Kingsley's idea is, to send two employees into vacation, who normally don't have much to do with each other... so we aaaaaaalll know of course, who this will be, but... why on earth had Narcissa picked Hermione?

Will they survive a whole week without magic, or do they have to "survive" nothing completely different...?

And what about... that little something, that should've never happened...?

UPDATE: Had it even been Kingsley's idea? Had he even asked other employees?

What if, Harry and Draco had there hands in all that vacation-thing, to give Hermione and Narcissa a little push, to get to know each other (more/better)?