A tale of a ZX9R, an old lady and the NRMA...

Long story short, a friend was riding my Ninja and an old lady cleaned him up. The following is my dealings with the NRMA.
The bike has lots of superficial damage, the carbon fibre exhaust broke & also the steering stop snapped off the frame. The bill came to $9077, which included a new exhaust kit and frame.
It is not my insurance policy, it is the old ladies (She had comprehensive.)
The inspector was at my house today (Hence why I have been hunting around the internet, and found this wonderful place.) to assess the bike. So he is happily looking at the bike, filling out his checkboxes on his clipboard. Then I handed him a quote for $9077 to repair it. He nearly gagged. I showed him what was wrong with the frame, and explained that I had been told it couldn't be welded back on and the entire frame needed replacing. I also said I had safety concerns about the frame being repaired with a welder.
Anyway.
He said that it is most likely easy to weld it back on, but said he would have to consult experts on the subject. I really hope I get the frame replaced, because if they try repair that frame I will seriously have the shits.
So now I propose these questions to you, the biking community, who may have experience in such matters.
a) What are the chances of them deciding that frame is repairable? My bike mechanic says not to worry, because it is standard practice to replace a damaged frame and they won't tell me it's fixable. But I'm worried. I want the thing replaced. Not fixed. Well, actually, I want the money.
b) Because it's not my insurance policy, and I am the third party, they can't write off my bike, correct? They have to give me the money to fix it, correct? My understanding is I will be recieving money, the only question is how much. Or can they take the wreck and settle for what they say it is worth?
c) Is the frame actually repairable? Would I be ok if I paid a couple of hundred bucks to get it welded up and pocketed the money they give me to replace the frame? (Assuming they do...) Surely welding up aluminium isn't impossible. Would that be legal? Or is that somehow insurance fraud?
d) I want a ZX12R. Would I be better off selling my wrecked ZX9R as-is, and then using all my cash to get a 12, or would I get more money if I fixed the ZX9R, sold it, then bought the 12?
I hope someone here has gone through this before... Thanks for any help / advice / reassurance.
The bike has lots of superficial damage, the carbon fibre exhaust broke & also the steering stop snapped off the frame. The bill came to $9077, which included a new exhaust kit and frame.
It is not my insurance policy, it is the old ladies (She had comprehensive.)
The inspector was at my house today (Hence why I have been hunting around the internet, and found this wonderful place.) to assess the bike. So he is happily looking at the bike, filling out his checkboxes on his clipboard. Then I handed him a quote for $9077 to repair it. He nearly gagged. I showed him what was wrong with the frame, and explained that I had been told it couldn't be welded back on and the entire frame needed replacing. I also said I had safety concerns about the frame being repaired with a welder.
Anyway.
He said that it is most likely easy to weld it back on, but said he would have to consult experts on the subject. I really hope I get the frame replaced, because if they try repair that frame I will seriously have the shits.
So now I propose these questions to you, the biking community, who may have experience in such matters.
a) What are the chances of them deciding that frame is repairable? My bike mechanic says not to worry, because it is standard practice to replace a damaged frame and they won't tell me it's fixable. But I'm worried. I want the thing replaced. Not fixed. Well, actually, I want the money.
b) Because it's not my insurance policy, and I am the third party, they can't write off my bike, correct? They have to give me the money to fix it, correct? My understanding is I will be recieving money, the only question is how much. Or can they take the wreck and settle for what they say it is worth?
c) Is the frame actually repairable? Would I be ok if I paid a couple of hundred bucks to get it welded up and pocketed the money they give me to replace the frame? (Assuming they do...) Surely welding up aluminium isn't impossible. Would that be legal? Or is that somehow insurance fraud?
d) I want a ZX12R. Would I be better off selling my wrecked ZX9R as-is, and then using all my cash to get a 12, or would I get more money if I fixed the ZX9R, sold it, then bought the 12?
I hope someone here has gone through this before... Thanks for any help / advice / reassurance.