'Cinderella,' with a post-performance touch of happily ever after
It wasn't the way she had planned it, but ballerina Julie Kent was treated to an affectionate farewell on the Kennedy Center Opera House stage Saturday night even though she hadn't danced a step.An injured calf kept the American Ballet Theatre star from what was to have been her final Washington performance before retiring this summer after a 29-year career. Substituting for Kent, Gillian Murphy gave a crystalline pe…