Is a wife sinful if she requests a divorce from her husband who has been afflicted with a mental illness?

Question : The questioner is also on the line inquiring about this question, and she says: A woman got married, and after two years of marriage, this husband was dismissed from his job because he began to behave in an abnormal manner. This woman went to her parents' home, and he did not visit her for three years. If this woman requests a divorce, will she be sinful because this man's behavior has become abnormal? She says:

Answer : Yes, there is no blame on her for asking for a divorce in this situation. The evidence for this is that the wife of Thabit ibn Qays (may Allah be pleased with him) requested a divorce from the Prophet (peace and blessings be upon him), meaning that her husband Thabit should divorce her. However, in the course of her complaint, she said, "I do not find any fault in his character or his religion." This indicates that if a woman finds fault in her husband's religion, she has the right to demand a divorce. But I say that she should first try to reform her husband so that she may remain with him, especially if there are children between them, whether male or female. She should not rush to ask for a divorce except in a situation where it is necessary. Every woman knows her own situation best.
But the general broad guidelines are that if a woman finds fault in her husband's character or his religion, she may request a divorce.