In the post, she also included an emotional message from Sarah: "I prayed and prayed that you could come. and you came."
The New Zealand Herald reports Sarah was found by law enforcement officers and a non-profit group called the Association for the Recovery of Children. She was last seen in Las Vegas on January 15.
Her mother, Amie Dunsey, released a video pleading for her to be returned.
In the video she said, "This is my absolute worst nightmare. We need Sarah home.
"I cannot wonder where she is and if she is safe. Please help us find her.
"Sarah... this message is for you: I want you to fight. Because I need you, all of us need you. The world needs you, so fight.
"We are coming to get you."
She also revealed the chilling last text Sarah had sent her, which read: ""If I die tonight it's a guy named..."
The name was redacted from the video so that the person who had kidnapped her would not be tipped off.
Police have arrested the two men that were with Sarah Dunsey when she was found.
Sarah's family has now asked for privacy while Sarah recovers.
"We ask to please give our family a little space and privacy," her mother said. "We are going to retreat into our safe place and heal."