What is the ruling on killing the wicked son and his father who assists him in his harm, knowing that the Muslim girl suffers from repeated rape and severe torture at their hands, and has reached the point of repeated suicide attempts? And is it permissible for the girl to kill herself during her rape to avoid suffering, or is she considered sinful?

What is mentioned in the question, if true, is a serious matter, a great crime, and torture of a Muslim woman. The perpetrator bears slander and a clear sin. It is obligatory to support her and ward off harm from her by seeking assistance from civil organizations and available laws, according to the Prophet's (peace be upon him) saying: "Support your brother whether he is an oppressor or oppressed." Supporting the oppressor means preventing him from oppression. It is not permissible to resort to killing these individuals, as that leads to chaos and bloodshed, and the matter of implementing hudud punishments is the responsibility of the ruler. It is important to pray for her, that Allah may ease her affairs and relieve her distress, for He answers the prayer of the distressed and removes evil.