In 1815, by special Act of the Legislature of Maryland, she secured a divorce.
Her last years were spent in Baltimore in the management of her estate, the value of which she increased to $1.5 million.

In 1861, she filed an inheritance claim in the Tribunal of First Instance at Paris after her former husband, Prince Jérôme, died on June 24, 1860.
On February 15, 1861, the Tribunal of the Seine ruled that "demands of Madame Elizabeth Patterson and her son, Jerome Bonaparte, are not admissible, and must be rejected."

Betsy died on April 4, 1879 in Baltimore in the midst of a court battle over whether the state of Maryland could tax her out-of-state bonds.
The case reached the Supreme Court (Bonaparte v. Tax Court, 104 U.S. 592).
The court decided in favor of Maryland.
 She was interred in Green Mount Cemetery, Baltimore.
Her tomb bears an epitaph: "After life's fitful fever she sleeps well."
In 1815, by special Act of the Legislature of Maryland, she secured a divorce. Her last years were spent in Baltimore in the management of her estate, the value of which she increased to $1.5 million.
In 1861, she filed an inheritance claim in the Tribunal of First Instance at Paris after her former husband, Prince Jérôme, died on June 24, 1860. On February 15, 1861, the Tribunal of the Seine ruled that "demands of Madame Elizabeth Patterson and her son, Jerome Bonaparte, are not admissible, and must be rejected."
Betsy died on April 4, 1879 in Baltimore in the midst of a court battle over whether the state of Maryland could tax her out-of-state bonds. The case reached the Supreme Court (Bonaparte v. Tax Court, 104 U.S. 592). The court decided in favor of Maryland.  She was interred in Green Mount Cemetery, Baltimore. Her tomb bears an epitaph: "After life's fitful fever she sleeps well."
Elizabeth Patterson Bonaparte