A 36-year-old woman pleaded not guilty Monday to charges stemming from an allegedly alcohol-fueled hit-and-run collision in Rancho Santa Margarita in February that injured a 17-year-old boy. Julia Elizabeth Royer was charged with hit-and-run with injury and child abuse and endangerment, both felonies, as well as misdemeanor counts of driving under the influence of alcohol causing injury and driving with a blood-alcohol level exceeding the legal …