Bright light?!, I knew it! Aliens came n sucked her up. Well the way I saw it was...when TDog told Carol to get out..she opened the door, yes the bright lights, n seemed to have blended..poofed out, Yet, when Rick and the rest caught up, stood in the very same spot..that dang Door was there, But, after the initial shock of TDog's death, and finding Carols headscarf, they Also opened that same door, Not illuminated by that bright light..and asked Hershel..Did anyone else come out...or did you see anyone else?..something along those line...So yeah, I'm saying..Aliens..Or..the ghost/spirit of Sophia showed up to guide her mom to safety..could happen. Smiles. biggrin ..oh well.