LOL about you chewing out the old lady. I'd be jumping up and down like an organ grinder's monkey.
1st of all, It's good you're Ok and that you're not in jail for cramming her coke bottle glasses up her rear.
It's time to see what you can get away with.
Talk to a couple body shops and get estimates that quote a replacement TRD body kit. Don't let the estimater for her insurance talk you out of it.
You may be able to come away with a matching paint body kit (I believe you posted earler about painting it to match?) or perhaps some light body work. (Need rolled fender lips?)
Don't feel guilty about working the system. Grandma pays a fraction of the insurance costs we do and it's their group causing the accidents. (A result of AARP's strong influence on the insurance industry.) Remember, you'll be inconvenienced for a few days while your baby is in the shop. (Enjoy cruising in that loaner Ford Escort the body shop will give you.)