Quick question: the list of acceptable additions to the active household includes "children." Is that restricted to only children of the founder/heirs, or could my heir's sister become pregnant before I move the heir out. Realistically, I just like the idea of the heirs having family (in the form of cousins) to grow up with. And technically, if she moves out before the delivery, there would never have been another playable/interactive character in the household. So, is that a legal option?