That really sucks! It sounds like they are taking care of it. I would guess that the water is coming from the tinted roof window, when I was looking at a few of the campers on the lot, one had a leak and was already causing damage. Forest River said they are switching to a new type of gasket material to correct this.
My camper is still dry but I have stress cracks on each corner of the window from the rivets being to tight. I sealed everything, but the dealer is going to replace the window and use the new gasket.
I really like my camper and as long as the dealer takes care of it, I will maintain my sanity.