Myriam Kaplan-Pasternak, the co-owner and operator of Devil’s Gulch Ranch, has devoted herself to keeping customers satisfied for decades. Due to a bout of ill health, she’s hoping her loyal patrons will pitch in to keep her 53-year-old operation going in Nicasio. Cancer treatment has prevented her from keeping up with her management duties at the ranch, which she runs with her husband and co-owner, Mark Pasternak. As a result, a few items have fallen…