LOS ANGELES, Apr. 23 – A former member of Charle Manson’s “family” who said she saw Donald (Shorty) Shea’s decapitated body buried at the Spahn movie ranch in Chatsworth in 1969 was flown here from Pittsburgh, Pa. But the girl, identified only as “Little Patty,” said she was unable to find the spot because the trees that had marked it were destroyed by a 1970 fire. Manson and two of his followers, Bruce Davis and Steve Grogan, have been convicted of Shea’s murder. The body has never been found