With how she wants to help and to protect? I agree. Though you're right, two URSULAs would be too many, if we can help it. Though any one name can belong to several people.

[ She wills her own silence with a sort of humming energy, thoughtfulness lending itself to emotion while she considers possibilities. ]

One of the others was suggesting Salacia. I was thinking even Cia-san might work... or maybe Otohime?

[ She doesn't know. What about a name for all on her own? ]

I think Mamori would also be a nice name. It's kind of related to the idea of being a protector.