Remarkably, less than a month after the crash Harris is wide awake and even back on his feet.
"He is, to be honest, going ahead in leaps and bounds. It's amazing," Kelsen said.
But he suffered a severe traumatic head injury, and still has a long way to go to recover.
He is unable to swallow and has to be fed through a tube. And he can't talk yet so communicates by writing on a pad.
He is, to be honest, going ahead in leaps and bounds. It's amazing.
"He's still thinking about motorbikes. One thing he wrote was for me to sort out TT airline tickets. So I said 'okay Shaun I'll sort that out for you, in your dreams'," Kelsen said.
"He's as nutty as a fruit cake, but then Shaun Harris was as nutty as a fruit cake anyway."
The next stage of his rehabilitation will be to travel to Wellington where he will receive specialist treatment.
"It's one step closer to home, just one step closer. And home is the best place for him to rehab," she said.
"He will live but how he comes back to us we don't know. Having said that, he's Shaun Harris and watching him, seeing what he does, he has amazing stamina."
Kelsen spent about three months in the UK and Isle of Man after Harris' 2007 accident.