What is the ruling regarding a mother who gave birth to her daughter out of wedlock, then raised her poorly, treated her harshly, exploited her, and then interfered negatively in her life after her marriage, and how can the daughter forgive her mother despite all this harm?

Among the virtues of Islam is its injunction to honor mothers, even if they are polytheists. How much more so if they are Muslim? A mother's ill-treatment, bad companionship, or unlawful conception does not deprive her of her right to filial piety. Her shortcomings do not justify the daughter's dereliction of her duty towards her mother, for each will be held accountable. Our advice to the woman is to seek Allah's help in honoring her mother, in compliance with His words, the Almighty: "And We have enjoined upon man [care] for his parents. His mother carried him with hardship upon hardship, and his weaning is in two years. Be grateful to Me and to your parents; to Me is the [final] destination. But if they endeavor to make you associate with Me that of which you have no knowledge, do not obey them but accompany them in [this] world with appropriate kindness and follow the way of those who turn back to Me [in repentance]. Then to Me will be your return, and I will inform you about what you used to do." The presence of resentment in her heart after striving to treat her well does not cause harm. As for the children asking about their lineage, the believer is tested, and she can resort to euphemisms without outright lying.