On the night of November 1, 1417, the Duke of Burgundy hurriedly raised the siege of Corbeil, advanced with a body of troops to a position within two leagues from Tours, and sent the queen notice that he was awaiting her.
Isabel ordered her three custodians to go with her to mass at the Convent of Marmoutier, outside the city.

Scarcely was she within the church when a Burgundian captain, Hector de Saveuse, presented himself with sixty men at the door.

"Look to your safety, madame," said her custodians to Isabel; "here is a large company of Burgundians or English." "Keep close to me," replied the queen.

Hector de Saveuse at that moment entered and saluted the queen on behalf of the Duke of Burgundy.

"Where is he ?" asked the queen.