Mrs Guest said 9-year-old Ethan had also adjusted well to life in Colorado, but missed his dad and said the pair reuniting again was a proud moment for Mr Guest.
"Birthdays and Christmas, first day of school and Cub scout achievements are all things he wishes his dad could be here to see. He is the strong big brother, his dad says 'look after your mum and Jade' and that's exactly what he does".
Mrs Guest said the family were able to spend four weeks together in Colorado before Mr Guest returned to Whangarei.
"We visited friends and family, enjoyed horseback riding, ATVing, swimming, American country dancing, and trout fishing in the mountain lakes of Colorado. It was also summer here, so he was quite happy missing a winter month over there," said Mrs Guest.
Last Christmas was the first Christmas the family had spent apart and Mrs Guest said it would be the same this Christmas. She said being away from each other had been "very difficult".
"We both agree that it's a major sacrifice that has its challenges mentally. We seem to take turns counselling one another back to remembering that everything will be okay and the changes in Jade have made it all worth it."
Mrs Guest said she followed the story of 19-year-old Alex Renton, who was the first person in New Zealand to receive cannabidiol in hospital after he was prescribed Elixinol, a cannabidiol made from hemp.
She said, through a group on Facebook called United in Compassion (facebook.com/groups/MC4CPNZ), herself and others had been advocating for more trials and access to cannabis for medical use.
-The family are now fundraising for a wheelchair accessible van for Jade.
To donate visit givealittle.co.nz/profile/individual/jsika007