Front Suspension Control Arm problems of the 2006 Jeep Grand Cherokee

Long story short my wife heard a noise in the passenger side front end. I had her stop by belle tire (where tires came from) to check it out. They said the passenger side lower control arm bracket separated from the frame and was not safe to drive! belle said they had never seen anything like it! I had it taken to town & country collision in flat rock (an a-1 shop) and they said they can't fix it unless they replace the whole frame! I also have a friend that's an insurance adjuster who has never seen anything like it! I'm wondering if there were ever any incidents in your system for anything like this? I will offer to give you the vehicle, as I did with Chrysler in my complaint to them, for investigative purposes? I know from my years of work in the automotive industry that there were salt spray tests & requirements on most chassis parts. People are astounded that a 15 year old Jeep that's never been in an accident and is garaged and kept clean and maintained and still running like top could have a failure as this! any assistance or direction you can provide is appreciated.