Auto Insurance Claims: Auto Claim, Rust and fraud

Question
My friend crashed her car in a recent storm. She immediately filed a claim. However it took an adjuster 10 days to come look at her car. By this time the car had rusted in the damage area. They deemed it a total loss. Today she is dealing with an investigation. They are trying to hassle her about  the damage saying because its rusty it appear to be pre existing.  When in fact  it not. What should she do. And why is her own insurer treating her so poorly and as a criminal.

Answer
It is very common for rust to appear in as little as a day, right after a rain.  Anyway, that is really beside the point.  If the delay occurred as you say, then I say let the investigation surge forward!  They would be brave to deny a claim just based on some rust.  If they have some evidence of fraud, they will deny the claim, if they do not, they will pay for the claim as the policy requires.  

I hope this helps.  Just let them investigate.  Look up oxidation and such, you can see how easily rust forms and how quickly; so can the insurance company.

I hope this helps.