My brother stole my $110,000 inheritance by altering our mother's will to say that after paying her bills, there was barely any money left.. Don't miss: My mother wants to give me 70% of her estate my sister is furious. Confront your sibling and tell him/her to put the money back and tell them So if you can be part of stopping that early then you are helping your brother/sister. What do I do when my sister steals money from my parents?