EMMONAK, Alaska — She was 19, a young Alaska Native woman in this icebound fishing village of 800 in the Yukon River delta, when an intruder broke into her home and raped her. The man left. Shaking, the woman called the tribal police, a force of three. It was late at night. No one answered. She left a message on the department’s voice mail system. Her call was never returned. She was left to recover on her own.

“I drank a lot,” she said this spring, three years later. “You get to a certain point, it hits a wall.”

One in three American Indian women have been raped or have experienced an attempted rape, according to the Justice Department. Their rate of sexual assault is more than twice the national average. And no place, women’s advocates say, is more dangerous than Alaska’s isolated villages, where there are no roads in or out, and where people are further cut off by undependable telephone, electrical and Internet service.

The issue of sexual assaults on American Indian women has become one of the major sources of discord in the current debate between the White House and the House of Representatives over the latest reauthorization of the landmark Violence Against Women Act of 1994.