No, this problem is completely different from the stag hunt. This is because any individual tenshiko would prefer to spend her time doing something else and will only regret her decision if she can't convince any of the later tenshikos to make up for her. A stag hunt would be deciding to participate in a high-reward extracurricular activity, like the drama club - if one tenshiko defects, there's a significant cost, but if everyone defected then at least there'd be a uniform gain among all selves of more free time.