Is there sin upon the questioner for knowing the story of a girl who was raped, concealed her pregnancy, abandoned her newborn, then married after undergoing a hymen reconstruction surgery, without informing the girl’s family or her husband for fear of the family’s disintegration?

You bear no sin in concealing this girl; rather, you will be rewarded for it. Concealing Muslims is among the greatest acts of obedience and one of the reasons Allah will conceal a servant in this world and the Hereafter, as the Messenger of Allah, peace and blessings be upon him, said: "Whoever conceals a Muslim, Allah will conceal him on the Day of Resurrection." The Prophet, peace and blessings be upon him, also said to Hazzal: "O Hazzal, had you concealed him with your garment, it would have been better for you." And Abu Bakr Al-Siddiq said: "If I found nothing but my garment to cover a thief, an adulterer, or a wine-drinker, I would prefer to cover him with it." You must continue to conceal her and not reveal her matter, in preservation of her and her family, and remember that she was subjected to rape.