Rifqa, a born Muslim American teen, converted to Christianity and was allegedly threatened with death by her parents. She insists on saying that the Qur'an commands her parents to kill her. In her interview, she says, "You dont understand, Islam is very diffrent. If they love Allah more, they have to kill me, my blood is Halal now, because I have turned to Christianity, its honor killing, its in Quran, you dont understand". Rifqa Bary is absolutely right when she says, "you dont understand." However, the one not understanding what Islam teaches is herself and those who want to kill her (if any).
The alleged punishment of apostasy in Islam has no basis in the Quran and was not practiced by the Prophet Muhammad (pbuh). There is not a single verse in the Qur'an which commands the killing of someone who reverts from Islam. In fact, the Holy Qur'an announces the freedom of religion by saying, "there is no compulsion in the religion" (Holy Quran 2:257).