Sounds brilliant and I can already think of awkward arguments. She could be a sarcastic smart ass Ravenclaw ex instead of Slytherin. Any form of connection would work and we do need the Ravenclaw brains on or side. 

On our last incarnation we reached London and one character was jumped by a few old death eaters in knockturn alley. Not much else happened aside from us apparating to the leaky cauldron for medical help but that's when the site went down. So there really wasn't much for France yet and I think we can come up with something cool. 

Imp said something about an old witch dying... We could have something dramatic like that as we all meet up. Logan can also make out with a French vixen but she wouldn't know... unless his leprechaun magic aids him against the Veela's powers of having him act all macho and impressive. Later on she could try to tear his throat out, kinda like that transformers scene where she tries to kill him with seducing. 

I think I might make Dale susceptible to their effect too, but not because she's interested, just a derp. :P 
Doctor did you wish to visit Beauxbatons?