You were satisfied that your parents had enough to sustain them into retirement, barring any unforeseen circumstances. You knew they had worked hard and saved carefully, and perhaps you had a hand in helping them invest for the future. That's why you were shocked to learn that a large chunk of their savings was gone, lost in an investment they never should have made.
It is heartbreaking to learn of the mistreatment and abuse of a loved one, especially when it came at the hands of a trusted friend or ally. Abuse comes in many forms, and while elderly individuals are susceptible to various types of mistreatment, financial abuse is one of the most common and most devastating.