Is a khul' that occurred in court considered the divorce of an angry person, knowing that there were family problems and a desire to avert harm, and is the husband considered to be under duress?

A wife is not permitted to leave her husband's house without his permission. Doing so is an act of disobedience and rebellion (nushuz) that forfeits her right to maintenance. Her family is not allowed to seek a separation between them or harm him through insults and verbal abuse. If a man divorces his wife in exchange for her renouncing her deferred dower (mu'akhkhar mahr), this is a Khul' (divorce at the wife's instance) and an irreversible divorce (طلاق بائن). It is not considered a divorce issued in anger unless he was unaware of what he was saying due to the intensity of his rage. Khul', when performed to prevent disputes and avert harm, does not fall under the category of a divorce issued under duress.