Families are made up of all sorts of people, and they don't have to be related to you by blood. Just look at Full House. There's a dad, some wacky uncles, two daughters, the Olsen twins, and Kimmy. (They might not like to admit it, but Gibbler's family.) But what if an alien took up residence in Mary-Kate's head? Would she still be considered family? We may have missed that very special episode of Full House, but thankfully Stephenie Meyer has stepped in to help us with this conundrum. Even Danny Tanner doesn't have a heartfelt speech and corny joke for an issue like this one.