If you guys were heading near me I would let you crash for the night I have plenty of room
But WV is pretty far out of your way and would end up costing more in gas than the hotel room
I say on the way back either do some stealth camping or just sleep in rest areas. And an air mattress in the bed with some wood stakes in the bed pockets with a tarp covering it all makes a nice sleeping area.
Maybe rent a minivan?