I'm sorry for the mammoth list! 
These are names that I like, but I don't love any of them quite enough, IYSWIM.
Miranda
Kezia
Lydia
Marguerite
Jessica
Imogen
Genevieve
Juliette
Severine
Jeanne-Marie
Melisande
Rosalind
Florence
Magdalene
Vivienne
Mathilde
Valerie
Vanessa
Veronique
Martha
Abigail
Chantal
If anyone can suggest similar names (not too 'pretty' I.e. not too many initial/ending vowels, fairly strong/classic, with a vague French connection), I would be very grateful... or pick those that you particularly like from my long-list.
Can't use Anna, Sophie, Elisabeth, Marianne, Beatrice, Evelyn, Charlotte, Eleanor... and have already asked MN for specifically French suggestions but most were too 'pretty'!