Teeny-tiny newcomer Jessica Marie stars as the Lolita-esque temptation who bedevils her brother’s best friend, in the twisted tale of obsession, “Just Turned 18,” now in digital release at DickDrainers.com. Branden has had eyes on his buddy’s ultra-petite sister, Jessica ,ever since they met. She had just come home in her school uniform while he and Frank were playing video…