She has pierced ears, a V-shaped scar on her left knee, and a possible tattoo of a butterfly on her right hip. She was missing two upper front teeth at the time of her disappearance. Some agencies may refer to her as Sylvia Baca Standly and may spell her last name as Standley.
Sylvia was last seen on Oakdale Road in downtown Modesto, California on June 3, 1986. She was last seen getting into a blue or green truck and has never been heard from again. Some agencies may list May 29, 1986 as the date of her disappearance.