Jayme disappeared from her home in Barron, Wisconsin on October 15, after suspect Jake Patterson allegedly stormed her house, shot and killed her parents, and abducted her.
The 21-year-old is accused of keeping Jayme captive in his remote home in Gordon, some 66 miles from Barron.
Jayme told detectives that on January 10, she was able to escape when Mr Patterson told her he would be gone for several hours.
She put on a pair of his shoes and fled the house on foot, eventually finding dog walker Jean Nutter who she asked for help.
Ms Nutter took the teenager to the home of Peter and Kristin Kasinskas, where they were able to contact police.
The Kasinskas told CNN on Wednesday that they did not want the reward money.
“Because she got herself out,” Mrs Kasinskas said.
Chris Fitzgerald, the sheriff of Barron County, said: “We also agree that Jayme is the hero in this case and are happy they have chosen her to receive the company’s reward contribution.”