1.All were fools living in the society when Muhammad calimed to be a prophet of God and powerful arabian clan leaders allowed him to continue the abuses.....the punishment of rape in islam is death.
2.If a father-in-law has raped under a muslim governament and if it is proved he will be awarded the capital punishment. Read the fatwa which came in the case which you are talking about and dont use the language of a Christian Missionary website.