MEMPHIS, Tenn. (AP) — Elvis Presley bids farewell to his best girl at a Memphis funeral home today. Mrs. Vernon Presley, the young singer's mother, died early yesterday at the age of 42. Elvis, granted an emergency furlough from the Army, had spent the day before chatting with his parents in her hospital room, but was asleep at his suburban mansion when she died. Gladys Presley was hospitalized Saturday with a liver ailment, acute hepatitis, but doctors said an unexpected heart attack caused her deth. Her husban was at her bedside. “It broke my heart, ’ Elvis said as he went to the hospital, ‘She was always my best girl. Elvis flew here Tuesday from Ft. Hood, Tex., where he is sta tioned. He is an only child. Pitcairn Island, where the mut ineers of the Bounty landed in 17 90, now has a population of 193. Its area is two square miles.