I’ve been writing a story that takes place in Japan, the main character is called “Mira” which means “stubborn” and her grandma is called “Hanako” which means “flower child” (please correct me if I’m wrong in any way).
I’ve been struggling with the honorifics I should use.
I think I’ve figured out that the grandma should call her granddaughter “Mira-chan” but I still can’t figure out how the girl should call her grandma. Is it “ōbasan”? Only “Bā”? “Hanako Bā”? I’d like the name “ Hanako” to be present when the girl is calling her grandma, is it possible without being too formal?