My feeling is to NOT send the Muslim girl back home but I think the sailing girl should be allowed to go if she (and her family) wishes to risk her own life.
Your logic is the same in both cases: you want each government to respect the individual's decision, you favor freedom.
How much a government should be allowed to interfere with each one's life is difficult to determine. The failed comunist experience in the Soviet Union drew the line too close to the individual. The US used to go to the other extreme, but changed.
I believe that evolution solves this type of problem for people regardless their beliefs and preferences.
If you want to spend time on this problem, the real challenges are how to accelerate convergence at the equilibrium and how to choose between equilibria when more than one is available.
All the best,
Luiz