A 4-year-old Mexican girl whose mother and grandmother were murdered south of the border has received asylum in the United States, her uncle said Friday.

Heidi Rubi Frayre is already living with relatives in the United States, Juan Frayre Escobedo told Efe.

"She's fine and she's even already going to school, but her adaptation will take time because she has gone through very tough situations, such as the loss of her mother and later of her grandmother," he said.

Heidi's mother, Rubi Marisol Frayre, was slain in 2008 in Ciudad Juárez, the gritty border metropolis just across the Rio Grande from El Paso that is Mexico's murder capital.

She was 16.

Though boyfriend Sergio Rafael Barraza Bocanegra was ultimately arrested and charged with the crime, his 2010 trial ended in an acquittal, with judges citing a lack of evidence.

An appellate court subsequently overturned that decision and found Barraza guilty, but he remains at large.

Incensed at seeing her daughter's killer go unpunished, Marisela Escobedo led marches and protests to demand justice until she was gunned down on Dec. 16, 2010, while picketing in front of government offices in Chihuahua city, capital of the like-named state.

Several members of the extended family subsequently fled to the United States after receiving death threats.

Heidi Rubi was brought across the border by four uncles and other kin days after her grandmother's slaying.

While the adults were kept at an immigration detention center in El Paso, the little girl was sent to a special children's facility in Houston, where she spent a little more than a month before authorities placed her in the care of family members.

Monica Arias Hernández, daughter-in-law of Marisela Escobedo, was granted political asylum in the United States last year.

The 34-year-old Arias was a witness at the trial of the suspected killer of Rubi Marisol Frayre.

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