What do you mean by agreement on your mother's name?,whether your mother has a registered sale deed of the property on her name or not?,if not then how can she claim the title to the property? Who is the vendor of the sale agreement and where is he staying?,whether he will be ready to execute the sale deed in your mother's favor now? Mere sale agreement will not confer title to the property. She has to initiate process to get the property registered on her name. A copy of the sale agreement (if registered) can be obtained from registrar's office.The other issues of your father can be tackled legally either by giving a complaint with the police or by filing a private complaint with the magistrate court or by filing a maintenance case.