Mixte or girl town style bike - sorted

[Chapeau! Velo]

Don't ask. The wife nonchalantly mentioned that she is letting the Au Pair smoke around on her rarer than hens teeth never to be replaced agan when destroyed / nicked Kona Ku. Therefore, she needs her own bike (the Au Pair). As per the title and anything considered; so long as it's cheap. Probably 16" to 18" frames. Thanks.

Edit: £30 serviceable pile bought from my LBS