A missing mom from Pennsylvania who disappeared after she left a party and argued with a friend is still alive, a private investigator said Tuesday.

Toni Sharpless, 29, vanished more than a month ago after she left a party and fought with a friend who tried to stop her from driving, saying she was too drunk.

The friend got out of the car during the Aug. 23 incident and Sharpless drove off. She hasn't been seen or heard from since.

Eileen Law, who was hired by the Sharpless family, told "Good Day Philadelphia" Tuesday that Sharpless was spotted in Camden, N.J., after she disappeared, but she doesn't know if she's still there.

"I believe she is with people who don't realize Toni is missing," Law said.

A thorough background check was done on the friend Sharpless was with when she vanished, according to Law. She said it's not likely the other woman was involved in the disappearance.

Crews have searched the Schuylkill River in Philadelphia but have found nothing connected to the case.

Sharpless is described as 5 feet 5 inches tall, 135 pounds, with red hair and blue eyes. She was driving a black 2002 Pontiac Grand Prix with license plate number DND-7772.

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