That sucks, bad luck dude.
what year and model is it? Rictus might be right, consider a buy back and pay out, you might be better off.
It just depends if you're planning on keeping the bike for a long time or not? If you change bikes often then might not be worth it as the write off will render the bike almost worthless to anyone other than you.
let's hope damage isn't as bad as first thought and she's able to be repaired. Fingers crossed!
Godd luck mate