She said Cory was pretty happy when he was told the news, despite being exhausted from the MRI scan.
"All he heard was 'no more chemo' and he said 'OK', smiled and went back to sleep."
Over the past six months, Rotorua people have got behind the Josephs at events such as June's Ngongotaha Family Fun Day, which raised more than $8000 to help with the family's costs.
Mrs Josephs said community support had been a welcome boost in more ways than one.
"Going from working to no job and no financial support it gets hard, but it's not only that - you lose your faith in a lot of stuff," she said. "Seeing what your kid goes through you have down days then out of the blue, you get a text or a letter and it brightens your day."
Mrs Josephs said there was still a long way to go - Cory will need scans every 12 weeks for the next year. His port, through which he received medication, will also have to be flushed regularly for up to six months - it's left in so long in case the cancer grows back.
"They can't 100 per cent guarantee it won't come back just as they can't guarantee [his brother)] Levi won't get it, but it's as good a result as we could hope for."
The chemotherapy has also affected Cory's balance and left him "flopping his feet" when he walks. While that's frustrating for Cory, Mrs Josephs reckons it's a small price to pay for a cancer-free child.
All going well Cory, who turned 5 last month, will finally be able to start school in February.
"He's cancer-free, we can take on anything."