Interesting. Where did you get this information, I have a couple books on Mary but am always eager to find out even more about her.
I got the information from the following books:
“The Last Stuarts: British Royalty in Exile” by James Lees-Milne
“King in Exile: James II: Warrior, King, and Saint” by John Callow
“A Court in Exile: The Stuarts in France 1689-1718” by Edward T. Corp
“The Stuart Court in Exile and the Jacobites” edited by Eveline Cruickshanks