My Mother had an Irrevocable Trust set up about 20 years ago. All properties were to go to me,with my sister having life rights to live at 1 property. And everything thing else (bank accounts, furniture, cars, etc.) was for my sister. My Mother had a stroke 2 years ago and my sister moved in to help her. My sister claims the Trust was stolen durning a break-in and that the company went defunct. She had my Mother make out a new Will and my sister was named as sole heir to everything. Is there anything I can do.