Since coming home from hospital she has continued to make progress, but someone must still always be with her.
Team members take turns looking after her every day from 4pm till 8am when Tracy, who is a nurse, takes over.
In her nomination letter Mrs Yeats wrote that the support the team provided had allowed her family to get back to a "new normal" life.
"Over the last year our team of carers has settled down to be a group of six amazing women.
"They have witnessed our highs and our lows, celebrated our successes with us and cried alongside us at times.
"They have developed a wonderful rapport with her, treating her like any other 12-year-old and not dwelling on her limitations but rather encouraging her abilities and communication."
Mrs Yeats said she asked AttitudeLive to change the rules so that a group could be nominated, rather than a single support worker.
"I thought that would be a really good way of acknowledging what they do. It was only open to single carers but I wrote to them and they opened it up. I couldn't pick one of them over another." Support worker and teacher aide Shona Henwood said the group made a great team.
"We all work together, we can't do it alone. Tracy is also such a fabulous role model to us all - we just do what we have to do."
As part of their prize, two members of Team Yeats will be flown to Auckland in December, where they will be chauffeured to a black-tie dinner and awards ceremony, and stay overnight at the five-star Sofitel hotel.
It would be a special evening, Ms Henwood said.
"It will be a blast - we will never forget it." But the team agreed that most days a smile from Grace is enough of a reward because, as carer Caroline Le Grove put it, "she's the kind of girl that makes you fall in love with her".
The Grace Yeats Trust is fundraising to help buy Grace a wheelchair bike. Get in touch through the trust's Facebook page to donate.
