The woman said she contacted police about the incident but was still terrified for her safety and was now in a refuge.
"I tried to go back to the property, but every time I heard a noise my heart would start racing. I couldn't sleep for almost three days. We couldn't stay there."
Department of Corrections deputy national commissioner Andy Milne said any decision to grant bail was made by the district court, and corrections was not party to proceedings.
"A person granted bail is not in corrections custody, and therefore not accompanied by corrections officers," Milne said.
Barton failed to return to Christchurch Men's Prison as scheduled and police were immediately advised, Milne said.
A police spokesman confirmed Barton's arrest warrant was still active, and they were "making enquiries" to find him.
Police request anyone with information about Barton's whereabouts contact their local police station or call Crimestoppers on 0800 555 111.