In her 30 years at West Marin Senior Services, Susan Deixler made a lot of people happy. They made her happy in return. “It was terrific,” she said. “It was a wonderful opportunity to work with people I just adore. I learned something every day, and hopefully I did some good. It’s such a pleasure to help people.” On Tuesday, the Marin County Board of Supervisors acknowledged her recent retirement and honored her contributions at…