Question: When did Sophie Of France (1786-1787)'s mother die?
Sentence (from "Sophie of France (1786-1787)"): Sophie Helena Beatrice of France ("Sophie Hélène Béatrix", 9 July 1786 – 19 June 1787) was a French princess, the second daughter and last child of Louis XVI of France and Marie Antoinette.
Relevant evidence: Yes