Possible Clues:

• Friend in France
• Jill, to Jacques
• Yves' squeeze
• Luc's gal pal
• Le Havre honey
• Savoie sweetheart
• 18-Across confidante
• Foreign pen pal
• 'The poor bishops are gone upon their travels, and their chère ----'s upon the town'
• A nameless lucrative source for female friend abroad