When Wade asked Gail if she'd go down the Gauntlette again
In that scene, where Wade was talking to Gail about the Gauntlette and asking if she'd go down it again, Gail said no because she has kids and Wade said "and a husband" and Gail said "Yes and a husband." Wade then said "and what if you didnt?"
Ok, if someone, especially a man, that I've only known for a day at the most said that to me, I'd be starting to get seriously suspicious and freaked out. Gail was way too trusting of Wade and Terry. I would not be letting two men that I don't know go camping with me at all. I would also pack a gun with me for protection too. If Tom and Gail had a gun, they probably would not have gone through what they did.