MONTEBELLO, Puerto Rico — Relatives helped Maribel Valentin Espino find shelter when Hurricane Maria roared through her community in northern Puerto Rico. Neighbors formed volunteer brigades to cut fallen trees and clear twisty mountain roads after the storm had passed. Now, friends and a local cattle ranch provide the water they need to survive in the tropical heat.Valentin and her husband say they have not seen anyone from the Puerto Rican government, much less the Federal Emergency Management Agency, since the storm tore up the island Sept. 20, killing at least 16 people and leaving nearly all 3.4 million people in Puerto Rico without power and most without water.“People say FEMA is going to help us,” Valentin said Tuesday as she showed Associated Press journalists around the sodden wreckage of her home. “We’re waiting.”Many others are also waiting for help from anyone from the federal or Puerto Rican government. But the scope of the devastation is so broad, and the relief effort so concentrated in San Juan, that many people from outside the capital say they have received little to no help.Valentin, her husband and teenage son live in one such area, Montebello, a 20-minute drive into what used to be lushly forested mountains near the northern coastal municipality of Manati. Hurricane Maria’s Category 4 winds stripped the trees bare and scattered them like matchsticks. “It seemed like a monster,” she recalled.