well im pretty sure that a panel respray is around $200, so that much plus all the pannel beating involved mate, best go to a few local panel beaters and get some quotes.
or you could try paintless dent removal, but for a dent like that it might cost a bit and they might not be able to get it 100% out.
Yeah my best mate owns a paintless dent removal place and he had a look and said that he wont be able to get the dent out enough, and it will look shitty.
I got a quote of around 2K, so if that is what it is, then I guess she'll have to wear it.
Cheers