Please inform your mother to submit an application against your brother in the concerned office with a copy to Office of the Chief Secretariate of your State, which is located at the State Capital and the concerned department where he is employed. Let her request to submit a part of the Salary of her son directly in her SB Account so that her balance of lifetime can be maintained without the support of her Son. In that application let her mention about her husband's employment in the Office and his death and subsequently given appointment to her son on compassionate grounds after accepting the undertaking from him to take care of his mother and he failed to do so. Hence your mother is submitting the application.
Then she can file some case in Police Station about the torture of her son and further with that record she can file case in the Court of Law.
26th September 2012 From India, Kumbakonam
In general Mr. Bhaskar has rightly said about the redressal of grievances. However, intimate about total fact of the case. Since when she is living with you. Your brother is married or not etc.
She can file case in competent court of law for domestics violence, in same act she can ask monthly maintenance, accommodation so many other relief in same suit.
15th October 2012 From India, Delhi
18th October 2012 From India , Delhi
19th November 2012 From India, Hyderabad
2nd December 2012 From India , Delhi