During the French Revolution, the sisters fled to England, leaving the convent in the care of Sister Olivia Catherine Darell.
She bravely remained behind with a few fellow sisters who were no longer able to travel. When the French forced her to sell the convent, she handled the situation ingeniously.

She sold it to a notary friend, who in turn sold it back to the sisters once calm had been restored. Sadly, however, Sister Olivia did not live to see the return of her fellow sisters, as she passed away shortly before. This memorial stone commemorates her courage and perseverance for future generations.