I'm 2 hours away from the camper currently, so I had my mom take a picture. Only the outside shot came through, she's going to try and send the interior later.
You can actually pull the exterior shell far enough away to pull all the moss out (that's what the hubs and I did over the weekend before we thought we'd better look into this a bit more before going further) and it goes up almost all the way to the top, though it doesn't bulge the last 2-4 feet.
The interior is just fairly bubbly, delamininating type stuff in a 2 x 2 area, under the emergency window in the back, where it was popped open a bit. The interior of the cabinets above the bed and the rest of the walls are all dry.
There will be no further loaning out of Serenity until everyone agrees to pony up some compensation for time used. But after this amount of time has passed, there's no way to know who caused it or when it happened. Expensive mistake that won't happen again.