SEARSPORT, Maine — Dawn and Cassidy Gintz, a mother and daughter who live in and run a New England bed-and-breakfast together, forgive you in advance for thinking of them as a real-life version of the TV show “The Gilmore Girls.” They, too, are fans of the show, about a single mother and her daughter who live in fictional Stars Hollow, Connecticut, where a bed and-breakfast is central to the story. For them, it hits close to home. “I think I’ve watched the series 10 times,” Cassidy Gintz, 24, said.