Bummer, My bro backed into the quarter panel on my 67 camaro 6 months after i took it down to metal and re-sprayed it black... he has a BIG IOU out... sounds like you're in the same boat.
try a search on car-part.com for a used auto-parts door if you are patient you may even find the right color and trim if you can live with the dent for a little while (pretend its a battle scar from the woods). Goodluck, glad she didnt get the rocker or the cab corner or the bed!