Twilight is about getting older and relationships - not about a murder mystery. It's about love when you reach a certain age; nothing is in primary colors.
In America, people rarely stay in the town where they grew up, rarely stay in close proximity to their parents throughout their lives. You rarely find parents in their old age being taken care of by their children.
My next film is always shaped by the last one... by the things I feel I didn't get right, or the things I like and want to try to develop further, but it always comes out of the last picture.