A massive search for a missing Rock Hill woman ended Saturday afternoon and investigators said they still hadn't found Susan Peterson.
Detectives said the 58-year-old woman took her brother's 2009 Ford Ranger pickup truck last week to donate blood plasma in Charlotte.
"That's how she makes extra money is to donate plasma," said Trent Faris, York County Sheriff's Office spokesman.
Her brother, Michael, told Eyewitness News Saturday that Susan never came home.
"I got up in the morning and she still wasn't here -- so I called the police."
Friday night that truck was found nearly 200 miles away from Rock Hill in a wooded area in Randolph County. Investigators searched the woods for her Friday night and Saturday, but they didn't find her or any signs of foul play.
Susan's brother said he doesn't know of any connections his sister has to Randolph County.
"She doesn't know anyone else around here as far as I know."
York County sheriffs deputies said they were still trying to determine if Susan ever showed up to her appointment in Charlotte next week.
They're asking anyone with information in her disappearance to call the York County Sheriff's Office.
They said Peterson is 5 feet 2 inches tall and about 130 pounds.