August or forever

"Ten-year-old Molly has always loved having a sister, but sisters are supposed to live together, right? Molly certainly thinks so. Unfortunately, her older half-sister Alison lives on a whole other continent. Their video chats are great, and Molly is thrilled when Alison's hand-written letters arrive in the mail like surprise gifts. Still, it's not enough, not compared to what other siblings have. That's why when Molly finds out that Alison is fi...