The family of a Passaic County grandmother who was killed by a hit-and-run driver last week is making a desperate plea for help finding the suspect.

Autorities say 58-year-old Kelly Chalkley, of West Milford, was struck and killed as she walked the family's dog, Misty. She was struck in the parking lot of Mt. Laurel Park, in the Hewitt section of town last Monday.

Chalkley's husband, Garey, made the heartbreaking discovery after a distraught Misty returned home alone. "I went looking for her and I found her in the parking lot," he says.

The scene was just a few yards from the family's front door.

Garey Chalkley and the rest of his family are grateful for the support and condolences from the community. They are now hoping the driver who took their beloved mother, wife and grandmother from them will step up and do the right thing.

"I just want to say you need to come forward and man up," Garey Chalkley says, in a message to the driver. "Whoever it is... if it's an accident, it was an accident. We just need some answers and some closure."

So far, the family has collected $10,000 as a reward to anyone who can provide authorities information leading to the arrest of the driver.

Anyone with information is urged to call police.