After the footage went viral, the fiance - a Christchurch builder - phoned a radio station to defend the woman as a "a really nice person" and claim that they had split up some six months beforehand.
But NZME. News Service revealed that the pair - who met while travelling in Australia - had been "on a break" at the time and that the engagement had not been officially called off.
Now, the woman has moved back to the UK.
Her Facebook page, which was shut down when the incident hit international headlines, has since been reinstated and says she is from Solihull, in the West Midlands.
"She is a beautiful person but she's been such a silly girl who has made such a silly mistake that has had such massive repercussions for so many people," a source close to events previously said.
The woman is said to have been mortified by how the affair was exposed so publicly.
"She is not proud at all," said one person close to her. "She wants to just cut all ties with everyone."
Both Marsh Ltd, and the man - who has two teenage children to his wife, and who found out about the affair only after seeing the images on Facebook - have refused to comment.