By Priscella Vega From Los Angeles Times Rosario Rodríguez never wanted to leave her hometown of Trigomil, Nayarit. She was surrounded by family and could quickly get to the nearest grocery store or clinic. But love called, and she followed her then-boyfriend to Three Rocks—a speck in Fresno County where he worked in the fields. At first life there reminded her of home in central Mexico—the enticing small-town feel, the lushness all around. The charm wore off as the reality of living in a rural town in Central California set in. Then the drought broke the spell. “It was never my intention to come to this country,” Rodríguez said. “I was happy in Nayarit, but we got married and he brought me here. And so here I am.” For decades, farm labor has kept unincorporated communities alive throughout the Central Valley. But the drought is making it hard to stay. …