Do you think this can be repaired?

My father passed away a couple of years ago and left 2 truck campers behind. One is a Lance, Squirelite 186. I recall he would use this to drive down to his place in FL. It seems the overhead section that contains the bed is sagging a bit. More on the left side. the wrinkle in the siding shows evidence of this as well. I am pretty handy and do autobody, etc on the side. Just wondering if it can be fixed and if it would be worth it.

I will also include the pics of the other unit. I think it may need a floor, (which is solid, but fell)