For most of her life, the young woman born Kamiyah Mobley has lived under another name.

A neighbor in Walterboro, South Carolina, described her as a typical 18-year-old who resided with the woman she long believed to be her mother.

Mobley and the woman often got their nails done together, according to the neighbor, who asked not to be identified. The teenager graduated from high school and had a steady boyfriend.

But DNA tests this week revealed that Mobley was abducted from a Florida hospital in July 1998 by a woman posing as a nurse, Jacksonville Sheriff Mike Williams said Friday. Law enforcement has not released the name she has been living under.

She was found this week in South Carolina, where authorities arrested Gloria Williams, 51.

Williams was charged with kidnapping and interference with custody, authorities said. She allegedly used fraudulent documents to establish a new identity for Mobley.

Williams' neighbor described her as social worker who always provided for her daughter.

Williams is now facing extradition to Florida, where on a summer day nearly two decades ago she allegedly posed as a nurse and abducted a baby girl wrapped in a pink and blue blanket.

Investigators are talking to Williams' extended family in hopes of learning more. It's unclear whether Williams has an attorney.

In Jacksonville, about 175 miles south of where Mobley was found, her biological parents and grandmother were "extremely excited and overwhelmed with emotion" at the news, the sheriff said.

Mobley seems to be in good health, he said.