Thanks for the suggestions! I meant
Elsa as a sister to
Louisa. Sorry I didn't make that clearer.
I still haven't found a middle name that sounds exactly right. I do like
Elsa Catherine and
Elsa Josephine.
I'm not sure if I want to use
Elisabeth only because it has so many nicknames and I think I'd be devastated if she decided to go by
Liz or
Beth instead of
Elsa.
Thanks for your thoughts!!