Ohhh difficult, I like so many of them. My mom is French so I love many French names.
I'd consider (first names):
Elsa - it's a family name. My mother's and grandmother's first name (they go by Elka and
Elsie) and one of my middle names. So it would be honoring while she'd still have her own name.
Océane - this is lovely and I love the images it conjures up. The thing is, it's the French
Madison. Quite trendy.
Louane - despite it being the French
Caitlin (many many spellings)
Elise - honoring (see above)
Adele - so pretty
Mathilde - very pretty
and I like many many others:
Mathilde,
Julie,
Marie,
Clara etc etc I like almost all of them.
My choice:
ELSA LOUANE
Actually prefer Océane over Louane but it doesn't really go with
Elsa.
As for a boy...hmmm even more difficult but this time because I'm really really picky with boys names and hardly like any. I only have a really short list of boys names. As
Leo is on it I'll go with Léo. Aurélien is fun and I like it so Léo Aurélien it is. Even though Aurélien is a bit dated in
France.
ELSA LOUANE and LÉO AURÉLIEN
The names you chose are nice and go well together, I just don't really like most of them, sorry.
Margaux is cute but
Anna is boring and
Clemence always sounded heavy to me. I like
Louis (I have a teddy bear named
Louis Orlando) but
Jules seems dated and
Valentin always sounded very girly to me. I love
Valentine for a girl, though.