Tarawhiti is serving her sentence in Bangkok's infamous women's prison and is appealing for a royal pardon, which if successful could see her home before Christmas.

Klong Prem prison, home to 4,800 prisoners, is where Tarawhiti spends every day and night, sharing a room with 200 others.

In November 1995 Tarawhiti's life took a dramatic turn when she was caught trying to leave Bangkok with 250 grams of heroin. She was sentenced to death, but that was reduced to 29 years in jail.

Tarawhiti says they call Klong Prem prison the Bangkok Hilton because it is a very expensive place to live in.

"It costs money to live here - you pay for medical, you pay for clothing, you pay for food, you pay for everything," says Tarawhiti.

Tarawhiti had accepted an offer to come to Bangkok and she claims she didn't know she was being set up as a drug smuggler. She says she only found out, as heroin was strapped to her body.

"I would like my life here to be a testimony for other people outside so they don't make the same mistake because this is not something that you need to experience in your life.  You don't need to put your family, your friends, your children through the hardship and the heartbreak," says Tarawhiti.

Once every year the king of Thailand grants the release of several hundred inmates serving time in jail - a royal pardon is granted solely at the king's discretion. It depends on the length of time a prisoner has already served and the type of crime that they committed.

Tarawhiti is eligible for a pardon but she's in a queue with hundreds, if not thousands, of other prisoners and there are no guarantees as to whether she'll get it.

The king usually reserves his pardons for the end of the year.

Tarawhiti dreams of spending Christmas with her children and grandchildren in New Zealand.  But she also has to face the cold hard truth that realising her dream is only a remote possibility.