Kottayam: Mary Roy, the mother of Man Booker prize winner Arundhati Roy,who is a women rights activist has joined the Aam Aadmi Party.

Roy, who received the party membership from state AAP functionaries here on Tuesday, said she expected the new party would bring about a qualitative change in politics.

“Most other parties have become outdated and cannot bring about a change. A change is essential and I expect AAP will strive for that,” she said.

Roy successfully fought a prolonged legal battle for establishing inheritance right of Keralite Syrian Christian women over family properties.