I guess it’s no different than a show like Big Brother, where you might need to be mentally prepared to be in a space for an extended period. Or hey, even the guys that were on Boom for hundreds of episodes (but in their case, at least they were making decent money the entire time).
All that said, I probably couldn’t blame her for her decision. She’s probably not the only one that’s mentally done at that point, and if you don’t feel like you have better than a 1 out of 6 chance at winning, it might be best to cut your losses and go home.