You may not think of West Marin as a food desert, but that’s how Chloe Cook, the manager of West Marin’s Health and Human Services office, describes it. For those who cannot afford to shop at the high-priced local markets, a simple grocery trip to central Marin and back on public transportation can require more than one bus transfer and take several hours. Now, as federal emergency funding for the state’s CalFresh program ends in…