I know a
Judith Carolina "
Carolina" and often "Caro"!
She is Guatemalen and the Spanish word for expensive is Caro, so it's slightly funny.
Anyway it's cool, I like it. I definitely like it more as a nickname for
Caroline or
Carolina, though, because those are the only two "care" names I can stand. I think it can stand on its own, maybe? I like Caro better.