I like [name_f]Clementine[/name_f]! [name_f]Clementine[/name_f] [name_f]Cressida[/name_f] is really cute, I also like the previously mentioned nickname of [name_f]Cece[/name_f] for her!
some other suggestions:
with a c-
[name_f]Clementine[/name_f] [name_f]Cordelia[/name_f]
[name_f]Clementine[/name_f] [name_f]Cosette[/name_f]
[name_f]Clementine[/name_f] [name_f]Chiara[/name_f]
[name_f]Clementine[/name_f] Celine/Celina
without a c-
[name_f]Clementine[/name_f] [name_f]Rosella[/name_f]
[name_f]Clementine[/name_f] [name_f]Ophelia[/name_f]
[name_f]Clementine[/name_f] [name_f]Isella[/name_f]
[name_f]Clementine[/name_f] [name_f]Adela[/name_f]
[name_f]Clementine[/name_f] [name_f]Sophia[/name_f]