OK. So here is what i got. So one of chloe's grand parents are inku's grand parents, so the only way for chloe to be like how she is, that probably the grandma or grandpa is a Human??? and the other is a skeleton? ((Idk)) And so they had a child one a skeleton and the other basically a sans but in a human vessel, so that human married another human and the skeleton married a skeleton, and so the skeletons had inku and the humans had chloe.