A New Hampshire teenager returned home July 20 after disappearing for nine months, and now doctors and her family are concerned about her health. Law enforcement officials are still talking with the girl, Abigail Hernandez, and her family to understand the circumstances of her disappearance and subsequent return.

The Hernandez family told the Boston Globe that their daughter had lost a "considerable amount of weigh," and is trying to recuperate.

"Right now, Abby is resting, extremely tired and in deteriorated health, and has lost a lot of weight," they said in the statement. "She is working to build her strength back and we hope soon she will be back on solid foods."

Conway police have been speaking to Hernandez, 15, to try to piece together where she has been, but said she appeared "traumatized," making it difficult to discuss her nine-month absence. According to officials, Hernandez was abducted on Oct. 9 as she was walking home from school. She was driven away by a man "in his mid-forties" who appeared "slightly overweight and a little taller than 5-feet-4, with a large build, darkish skin, dark brown eyes, and black stubble on his face."

Police have not said this man is a suspect, but have reported they know his involvement in Hernandez's abduction and want to interview him.

"Our biggest challenge is we're dealing with incomplete information," Kieran Ramsey, assistant special agent in charge of the Boston Division of the FBI, said. "The victim in this case is a 15-year-old girl. It's not as cut and dried as people think that somebody can exactly recount what happened, when, and where."

Ramsey went on to say that there have been unusual aspects of the case throughout investigation. Two months after Abigail's disappearance, her mother Zenya received a letter from her daughter, the contents of which were not released.

"Early on, there were solid indications of an abduction," Ramsey said. "A 14-year-old girl goes missing. Her social media and phone activity goes dark. No one sees or hears from her. Then, at some point, we get that letter to her mom. That's very unusual. Then you fast-forward, and nine months later, she reappears."