A US teenager has been found alive, 12 years after she was abducted.

Twelve years ago, four-year-old Sabrina Allen was kidnapped from her home state of Texas in the US.

This week, Sabrina was finally found in a little town in Mexico with her mother, who allegedly took the little girl for a scheduled weekend visit and never brought her back.

Sabrina’s mother Dara Marie Llorens has allegedly undergone extensive plastic surgery to conceal her identity.

Sabrina had been using a fake name, dyeing her hair and not attending school, her father Greg Allen said on Wednesday.

“The last thing that Sabrina said to be was: ‘Daddy, don’t ever forget me’,” Mr Allen said in a video uploaded to a GoFundMe page.

“Sabrina’s 17 now, she was not in school and her education is reportedly several years behind,” he said. “She was told that I didn’t want her and that I committed suicide.”

Llorens, 44, was taken into custody on Tuesday after a secret mission conducted jointly by US and Mexican authorities.

She is now police custody at the Travis County Jail, where she has been booked on aggravated kidnapping charges, the Daily Mail reports.

Sabrina was found to be in good physical health and flew back to Texas on Tuesday, an investigator told USA Today — but her full recovery from the ordeal will take some time, according to her father.

“Sabrina has been under an intense campaign to hate me for 12 years,” Mr Allen said. “Even though she’s back in Texas, we still have a difficult road ahead.”

“One of my goals throughout this whole orderal has been to raise awareness about parental abductions. Many people assume that if a child is with a parent it’s just fine, but that’s usually not the case.”

Mr Allen added in a statement: “I am overjoyed that Sabrina has been found alive and is safe. Our entire family would like to thank the investigators that made this happen.”

“We look forward to being reunited very soon.”

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