Sabrina Allen, who disappeared when she was 4, located near Mexico City
                                
                                
                                    (Newser) -
                                    Sabrina Allen, a Texas girl who went missing at the age of 4 in 2002, was found alive in a small town southeast of Mexico City yesterday and is now back in the US, the Austin Police Department confirms to  ABC News . Private investigator Philip Klein tells ABC that Mexican...