Maintenance and Welfare of Parents and Senior Citizens Act, 2007 make it a legal obligation for children and heirs to provide maintenance to senior citizens and parents, by monthly allowance. This Act also provides simple, speedy and inexpensive mechanism for the protection of life and property of the older persons.Maintenance includes provision for food, clothing, residence, medical attendance and treatment
Section 125(1)(2) of CRPC also makes it incumbent for a person having sufficient means to maintain his father or mother who is unable to maintain himself or herself and on getting proof of neglect or refusal, may be ordered by a first class magistrate to make a monthly allowance not exceeding Rs.500/-.
Hindu Adoption and Maintenance Act, 1956 by Section 20(1)of the act, every Hindu son or daughter is under obligation to maintain aged and infirm parent, if unable to maintain himself or herself is entitled to maintenance. Amount is determined by the court taking into consideration the position and status of the parties.
So in your case all the children’s (Husband and his brothers) are liable to protect their parents. Openly talk to them and bring them under one roof for providing proper care to your mother in law.