HILLSBOROUGHA 17-year-old girl was killed Wednesday when the driver of the car she was in lost control and slammed into a power pole north of Plant City, deputies said. The accident happened about 10:10 a.m. north of McGee Road. Jill Shepherd of 4717 Keene Road died at the scene. Another passenger in the 1990 Plymouth, Kerri Register, 14, of the same address, was in critical condition Wednesday at Tampa General Hospital. Deputy Alan Hill said Jennifer Rowell, 20, of the same address, was headed north on Keene Road when she lost control of the car after passing a slow-moving garbage truck on the two-lane highway. Rowell was hospitalized in stable condition Wednesday. No charges have been filed, Hill said.