How did Ayanna Pressley’s net worth jump from $12,000 to $8 MILLION?

Ayanna Pressley’s net worth jumped from $12,000/year in 2019 to $8M while in office. Now she owns 5 rentals including a Martha’s Vineyard spot generating $350k annually. Her husband spent ten years in jail, so it's not like he contributed unless he had money stashed somewhere before he went to jail.