As more food for thought... If there was no possibility of getting stronger as a result of participating, it sounds like a bad deal. That's below U.S.'s minimum wage, and that's what people can get for jobs that don't involve you risking your life. This job would involve actual danger, so there needs to be some sort of hazard pay to compensate for the extra risk.288,000 Yen in USD Is 1,924.40 USD.
So that's how much she would make in a singular real time hour.
But in Dungeon Hour, at 144 hours, that's 13.36$ per hour.
I'll leave it to you guys to decide if that's a good deal or not.