'It will forever haunt us': School friend of girl, 13, who disappeared without a trace as she made her way to class reveals lifetime of trauma after choosing not to walk with her the day she vanished
- Bung Siriboon, 13, vanished on her way to school in Melbourne in June 2011
- Her high school friends have revealed their guilt eight years after disappearance
- The year-seven student usually walked to school with friends but was alone
- 'It will forever haunt us ... regret and pain in our heart,' Bung's friend Abbey said
The high school friends of a 13-year-old girl who vanished without a trace have revealed their regret eight years on.
Siriyakorn 'Bung' Siriboon was last seen by a neighbour walking to school from her house in Boronia, in Melbourne's east, on June 2, 2011.
The Year 7 student was usually joined by one of her fellow classmates from Boronia Heights College for the one-kilometre walk, but she was left alone on the day she disappeared.
Taylor, one of Bung's best friends from the college, said it's 'hard to live with' and recalled the moment she decided to venture to school without Bung.
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Siriyakorn 'Bung' Siriboon was last seen by a neighbour walking to school from her house in Boronia, a suburb to the east of Melbourne, on June 2, 2011

Taylor (pictured), one of Bung's best friends from the college, said it's 'hard to live with' and recalled the moment she decided to venture to school without Bung
'I remember it clear - clear as day. Walking with my brother, and he asked if I wanted to - and I don't know why, but I said, ''no'',' she told A Current Affair.
'I really regret it that I didn't walk with her that day, that was something that is really hard to live with every day.'
Another friend, Abbey, who frequently made the journey to class with Bung said: 'It will forever haunt us, and be a big regret and pain in our heart.'
Four of Bung's high-school friends sat together and questioned why their friend vanished and why no one has come forward with information.
One of the girls told the group of her chilling memory from the day of Bung's disappearance - the moment her name was called out in class but their was 'no answer'.
Bung's stepfather Fred Pattison remembered the moment he found out Bung was missing.

The year-seven student was usually joined by one of her fellow classmates from Boronia Heights College for the one-kilometre walk, but was regrettably left alone on the day she disappeared
Dyamai, another friend of the 13-year-old, phoned the family to try and tell Bung about something that was happening at school the next day.
Mr Pattison was unaware the teenager had not made it to class.
Speaking to A Current Affair, Dyamai began to cry as she recalled the heartbreaking phone call, where she was hit with the realisation Bung was actually missing.
'I basically told them their daughter was missing. Felt really responsible for it,' she said.
Dyamai said Bung was 'so special' and would always be her best friend.

Bung's grief-stricken mother Vannida (pictured with Bung's step father Fred Pattison) has moved back to Thailand, finding it 'difficult' to live in the home she shared with Bung

'I basically told them their daughter was missing. Felt really responsible for it,' Dyamai said
Mr Pattison said he feels like he's lived the last eight years in limbo and wants some form of update on what happened to Bung, whether it's good or bad news.
Bung's grief-stricken mother Vannida has moved back to Thailand, finding it 'difficult' to live in the home she shared with Bung.
Amid the guilt, three of Bung's tight-knit high school friends have bonded by tattooing their skin in memory of Bung.
Despite the unanswered questions, the group of friends are united by hope.

Amid the guilt, three of Bung's tight-knit high school friends have bonded by tattooing their skin in memory of Bung
Taylor said: 'Every day I'm still hoping that she's OK. You wanna know that these past eight years haven't just been the worst eight years of her life'.
Dyamai also said she was trying to remain hopeful.
'You want to have hope, because I really miss her,' she said.
In 2014 it was claimed a girl matching Bung's description was seen peering out the back of a white EA to EF-model Ford Falcon station wagon.
The car's driver was aged in his 50s or 60s, police said.

In 2014 it was claimed a girl matching Bung's description was seen peering out the back of a white EA to EF-model Ford Falcon station wagon. The car's driver was aged in his 50s or 60s, police said