Paisley -- A 20-year-old woman was airlifted to Orlando Regional Medical Center on Monday evening with life-threatening injuries after she was mauled by two pit-bull mixes, sheriff's spokeswoman Sgt. Christie Mysinger said. Rosalyn Delamore was attacked near her home about 5:30 p.m. when she apparently entered a friend's house on Oak Street in the Lake Kathryn area of northeast Lake County. The dogs tore off a portion of her right ear, bit her about the arms and ripped open her left leg, according to a sheriff's report. Neighbors beat back the dogs with a chain.