Donโt have the answer, but I feel for you. That situation s ucks.
Likely slide issues related to structural problem allowing and fatigue made it as bad as it is now. (Something an astute dealer or owner may have been able to catch earlier?)
As you donโt sound like folks who can take on a camper remodel yourself, Iโd be diligent about what minimum repairs you put into it. IE is the roof really damaged and to what extent. Maybe not worth an insurance claim.
Then see what you can get for it. If you can sell for more privately than trade, do it. And move on unfortunately.
Best of luck!
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5โ turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold