Does anybody have a solid explanation for what each "Trait" and "Sex Trait" does on a girl? It's kind of important to figure out what that does first since it looks like you can't edit a girl's Name and Personality once you've made her card, but there doesn't seem to be an in-game description of what they do. Obviously I can figure out what "Sensitive [body part x]" or "Masochist" means, but then what does "Lonely Heart" do? And for that matter, what impact is made by any of the non-sex "Traits"?
Oh, and is there a way to change a girl's Name/Personality without deleting and remaking her? Or a way to delete/remake a girl without going into file explorer?