Mother under depression. Help help!

I m the oy children of my parents and after my marriage my mother behaviour has changed so much that now she is finding very  small fault in me or my wife or my father and them shouting like anything .and continuously for more than 2 to 3 hours . Infact from last one year she left the home more than. 5 times and all relatives and all peoples consulting her and said why u r doing so she gave the answer that I don't want to live with my children's now they r not giving me time . She is housewife and I tried a lot that she will do anything so that she will be busy but not doing anything . Only doing work at house . Please provide me some name of medicine so that we will able to control the situation Please help help