Jewish foster home. Her advocacy was largely instrumental in the establishment of such a home in 1855. Other organizations that came about due to her efforts were the Fuel Society and the Sewing Society.

Gratz is said to have been the model of Rebecca, the daughter of the Jewish merchant Isaac of York, who is the heroine in the novel Ivanhoe by Sir Walter Scott. Scott's attention had been drawn to Gratz's character by Washington Irving,