Our adopted daughters have been violent, hired someone to kill us, and even attempted to kill us themselves after getting in touch with their violent drug-addicted birth mother. We want to terminate rights to preserve our assets so they can't kill us for drug money. How do we do this now that they are adults? Would it be better to nullify the adoptions? The adoption agency withheld important information knowing that we would not have adopted children who were so violent and whose mother would dictate that they kill us.