What should a girl do after discovering that her 66-year-old father is committing adultery and is talking to and spending on women, especially with his deteriorating relationship with his family and her suffering from depression and negative thoughts towards him? Should she confront him or tell her elder brother?

Accusing your father of adultery is a serious matter and can only be proven by his confession or by four witnesses.

Your father's behavior is reprehensible, and its sinfulness increases with his age, as it indicates a disregard for God's rights.

Your hatred of this act is a sign of faith, but beware lest it lead you to disobey your father in word or deed, or to contemplate killing him; for this is among the gravest sins.

You must be dutiful and kind to your father, no matter how badly he behaves. The greatest act of kindness towards him is to pray for him and to advise him gently and kindly through someone whose advice he accepts.

Face hardship with patience and by seeking refuge in God, obeying Him, and remembering Him; for by this, the heart is strengthened and the soul finds peace.

Your reluctance to obey and pray is a wrong path. Therefore, turn to your Lord and hold fast to Him. There is no harm in consulting a trusted psychiatrist if you need to.