Chris Webster and Nina Gerber are returning to the Mendocino Coast on Sunday, May 5, hosted by the Community Center of Mendocino to benefit the Center's programs, community events and classes, including the After-School Enrichment Program. Chris Webster's career began nearly two decades ago as a teen-aged lead singer for one of California's best-known regional acts, Mumbo Gumbo. She boasts a successful resume highlighted by four solo releases, and one amazing traditional Bluegrass/Americana recording with her sister Cassie and renowned…