What is required of the woman who said to her husband: He is forbidden to me, just as his mother is forbidden to him

Question: I have a relative who has been afflicted with several chronic illnesses and is unable to work. He has children, four of whom are working and helping their father with his livelihood. However, his wife says to her husband: “You have no right to take anything from the children’s money, and my maintenance is obligatory upon the husband.” She demands that he leave without his permission and do whatever she wishes. She has previously asked for a divorce and told her husband: “He is forbidden to me, just as his mother is forbidden to him.”

Answer: It is obligatory for the aforementioned wife to obey her husband in what is right. She has no right to leave without his permission if he is fulfilling his rights toward her regarding maintenance and clothing. She has no right to object to what he takes from his sons.
As for her declaring him forbidden, she must pay the expiation for an oath, along with repentance to Allah (Glorified and Exalted is He).
The expiation for an oath is feeding ten poor people or clothing them. For each person, it is half a sa' (a dry measure of about 3 kg) of the local staple food, such as dates, rice, or the like, or a garment that is sufficient for prayer.
As for her request for divorce, this requires looking into the cause. The court is the one to look into this, and whatever the court deems sufficient is sufficient, if Allah wills.
May Allah guide everyone to what pleases Him. And peace be upon you.