What is the ruling regarding a girl who committed a heinous sin and then repented, and what is the ruling regarding the one who was in a relationship with her, and what is the ruling regarding those who harm her and assault her with spitting and defamation?

Indeed, Allah forgives the sinner if he repents and resolves not to return to his sin; rather, He transforms his evil deeds into good deeds. There are other reasons for the forgiveness of sins, including brokenness and submission to Allah. Reproaching a Muslim for his sin is a characteristic of the pre-Islamic era (Jahiliyyah) and is considered a sin, as the Prophet, peace and blessings be upon him, forbade reproaching Muslims and seeking out their faults. On the contrary, a repentant person has sanctity, and one must turn away from those who have repented (in a negative sense). As for someone who exposes a Muslim and does not conceal his fault, he has committed a forbidden act. It is advised to be patient, seek refuge in Allah, adhere to the legal hijab, change jobs if possible, associate with righteous women, and read the Qur'an and the Prophetic biography.