I will be the first to say....... It'll buff out.
But seriously be glad you are able to move. That is crazy. Now that you have an attorney your next step is to find comparable cars (most companies say same year or +1 newer) that are in the same condition as yours. Really just find the highest priced examples for sale that are close to you to really drive the point home. The sad part is they feel like they can "pay" for any option or change but an extra 25 bucks for a mint interior is not ging to cut it. So go BIG.