After my grandfather's death, all responsibility of the family was on my father's shoulder. He brought up his younger sister and married her with a family friend. After, a year of marriage, some misunderstanding developed between the couple and my aunt was sent to our home by her husband. It's been two years and the things have not settled yet. She lives with us and her husband does not take her as his responsibility. My aunt wants to file a divorce, can she do so?