Her oven is explosive propane, but may not be big enough for a big old roasting hen. Now I assume she has 110V service in the camper. If so, she needs:

The Ronco Showtime Rotisserie, from Ron Popeil!! You just set it and forget it!
Actually, I suspect Doug's ex-wife does in fact have a rotesserie.
Problem however.
It's a rotisserie for a goose or a ham, probably.
And the way the primitives think, one can't possibly roast a chicken on a rotisserie for a goose or ham.
It has to be a rotisserie purchased especially for, and only for, chicken.