Oh, the irony! Here’s this great little film that insightfully melds together the humor and sadness and confusion of being a 13-year-old girl in 21st century America, but because it’s rated R, 13-year-old girls (and boys) can only see it if accompanied by a parent or guardian. But 13-year-old girls (and boys) will not want to see this with a parent or guardian, nor would those older folks want to see it with the younger ones, as much uncomfortable embarrassment could ensue.