Shakespeare would be a good choice--there's lots of film interpretations of his works, and we can even mimic something that happens over the summer in some metropolitan areas of Lupin's world. 'Shakespeare in the Park.' We can pick out a nice night, find a field, and set up there.

'British' just means that her home country is Great Britain, like how Lupin's French and his home country is France. They're geographically close...

Lupin would have a better idea.