A clandestinely arrived, illegally placed non-resident person from another country high on drugs and alcohol with a criminal record blew through a light last year and flipped my wife in her SUV. There looks like there was much less damage to it than to yours and they totalled it. It was NOT a very good process to get the most of the totalled claim.
My wife took care of it but she ended up turning down the first 3 offers by the Insurance company. They eventually tripled the original offer because she did her research and called them out on their odd appraisal for vehicle price averages within 100 miles. They would get several normal priced vehicles around the same Price/mileage and then pick one or two from outside the 100 mile radius to purposely bring down the average.
Good Luck. If you have to replace it, Thankfully Grand Cherokees are plentiful in just about any price range.