Exclusive: The mother of missing schoolgirl Bung Siriboon is living out her final days after a two-year battle with cancer.

The family has given 9News permission to publish the health update of Vannida, who was diagnosed with primary central nervous system lymphoma in 2024.

She has undergone multiple rounds of chemo but is now in palliative care.

The family has given 9News permission to publish the health update of Vannida, who was diagnosed with primary central nervous system lymphoma in 2024.© Nine

Those closest to the family say she may only have days to live and it’s feared she may never know what happened to Bung.

“These could be her final days, you’d think someone would say something now to help a grieving mum,” Bung’s best friend from high school Dyamai Hillard said.

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Hillard has started a GoFundMe page to help Fred, Vannida and Bung’s sister Pang during this difficult time.

“Some answers would change everything, I think it would give Nid the closure and the space to pass on without that pain,” she said.

“And Fred, hopefully to heal a bit better because how do you go thorugh life missing your daughter and losing our wife, watching her pass away slowly?”

Bung’s stepfather, Fred Pattison, has also lost his niece and mother recently.

“The support for GoFundMe could even just ease a little bit of the burden so he could be present,” Hillard said.

“[It] could go towards a number of things, but most importantly help him be able to pay for her funeral.”

Siriyakorn “Bung” Siriboon vanished while walking to school in 2011.

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She left her Elsie Street home in Boronia about 8.30am on June 2, 2011.

She was seen by a neighbour a short time later in Elsie Street, walking towards Albert Avenue.

Bung did not arrive at school that day and has not been seen or heard from since. Investigators continue to hold grave fears for her safety.

Those closest to the family say Vannida may only have days to live and it’s feared she may never know what happened to Bung.© Nine

This year marks 15 years since the schoolgirl vanished without a trace.

There is still a $1 million reward for anyone who has information.

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