Surveillance video captured a missing Florida teen walking out of her family’s home in the dead of night – before she seemingly vanished into thin air. Her father, Richard Cover, said he realized she was missing when he heard the dogs whimpering. 3 Sophia Veronica Cover, 16, went missing after she was last seen leaving her home in Golden Gate Estates on Friday, July 31. (Jordan Rice) Collier County Sheriff's Office3 Missing Sophia Cover, 16, is seen on a surveillance camera leaving her Florida home before vanishing. (https://www.youtube.com/watch?v=JZzgS0X4XK0) Gulf Coast News3 She has been missing since she left her home in Golden Gate Estates on July 31.