Amanda Blair, who works for Ray White Marshland, was involved in the crash on Friday at Lombok, east of Bali, reported Chris Lynch Media.
Blair sustained a head injury, lacerations and a punctured lung after she was thrown from the scooter.
She was in a stable condition in hospital, her 21-year-old son Bailey told Chris Lynch Media.
Bailey told chrislynchmedia.com he heard about the accident when Blair’s partner called him in a distressed state on Saturday.
Blair was in the intensive care unit at Siloam Hospital in Mataram, where she underwent emergency surgery on Saturday.
Blair’s sister Ashley has started a Givealittle page, to help with the medical bills.
"Sadly, Amanda's travel insurance has refused to cover any of the expenses due to the accident happening on a scooter.
"Her road to recovery will be long and challenging, with hospital bills already surpassing $18,000 and continuing to rise.
"We are reaching out for your support to help Amanda get the care she needs.
"Every donation, no matter the size, will make a significant difference in her journey back to health and getting her back home to New Zealand."
Said Ashley: "It was supposed to be a decent break away, but it’s turned into something just horrible.”