u/dupliciaa

I'm sorry if this question has been asked before. Was a slayers fan in high school and just recently discovered my love for it, but I've always wondered this even as a kid. Why do the writers continue to make Amelia and Naga cross paths, but never meet? As an older sister to a younger sister myself, I just get really sappy about sisters in the shows I watch, so I'd really like to know if there's any information anyone has that the wiki hasn't provided? I know Nama is meant to be Naga, but she doesn't have any of her memories and Amelia doesn't even seem to recognize her mannerisms, either. Does anyone know anything? lol