Hmm,
Severine Jehanne looks kinda nice...but i have absolutely no idea how to pronounce
Jehanne.
Severine Louise,
Severine Charlotte and
Severine Francoise are also very nice, and they all fits quite well to Viviennes MN
Claire.
I somehow would like
Severine Charlotte cause this way her MN would also starts with a C.
Oh, and i'd choose Malou cause i thought it would give stern
Severine a more playful touch.