I feel that it would be perfectly reasonable for this girl to repay these blokes with mutual gratification for their efforts. Sexual 'favors' should very well be a legitimate trade as payment for favors, consideration, or overall commerce. They already obviously see her as attractive, which is a complement in itself, and for all they have helped her with, it could be the least she could do to show her gratitude - that's obviously what they want - unless they're gay. There's even a private space in the van, or perhaps a motel, hotel arrangement, etc. They are clearly not christians after all, who just miss out on everything anyway, always settling for less.
In fact, "Love one another" would go much further with this consideration, as a gesture of appreciation.
Take that which tempts whenever you can! ∞