"We are undertaking our own internal review and will share the findings with the parents. The incident is also the subject of an HDC [Health and Disability Commissioner] complaint."
The finger was reattached, but Lilly's mother, Marie Campbell, said the surgery did not take, and the fingertip had gone black.
ACC has not yet agreed whether it will cover costs. In the meantime, Lilly's mother has set up a Givealittle page.
"I have to travel back and forth from my rural home to her hospital appointments (around 30kms each way), a cost I cannot afford," Campbell said on the page.
"I don't want to attack anyone here, I am currently dealing with hospital officials about the next steps to take about what happened but I am struggling to keep up, especially without a car.
"I would not have been in this financial situation if this did not happen to Lilly. It was no fault of my own. I am just hoping for a small bit to get by."
So far, $200 has been donated.