Social Security overpaid my 82-year-old mother by $20,000. What else is hiding in her finances?

According to a report by MarketWatch… “My mother has a pension, Social Security, investments and a house probably worth over $1 million.” complete report is on link below: Source: https://www.marketwatch.com/story/she-gave-a-neighbor-2-000-social-security-overpaid-my-mother-82-by-20-000-what-else-is-hiding-in-her-finances-1b54977f?mod=mw_rss_topstories