She reportedly asked Jourdain if she thought the Petit Trianon was haunted, and Jourdain told her that she thought it was. Three months later in Oxford,[20] the pair said they compared their notes and decided to write separate accounts of what happened while also researching the history of the Trianon. They thought they might have seen events that took place on 10 August 1792, only six weeks before the abolition of the French monarchy, when the Tuileries palace in Paris was besieged and the king's Swiss guards were massacred.