When the lords saw their quarters burning and heard the noise which came therefrom, they ran up all dazed and crying, 'Betrayed! betrayed!' so that none remained for the assault.

When the countess saw the enemy's host running up from all parts, she re-assembled all her folks, and seeing right well that she could not enter the town again without too great loss, she went off by another road to the castle of Brest [or, more probably, d'Auray, as Brest is much more than three leagues from Hennebon], which lies as near as three leagues from thence." Though hotly pursued by the assailants, "she rode so fast and so well that she and the greater part of her folks arrived at the castle of Brest, where she was received and feasted right joyously.

Those of her folks who were in Hennebon were all night in great disquietude because neither she nor any of her company returned; and the assailant lords, who had taken up quarters nearer to the town, cried, 'Come out, come out, and seek your countess; she is lost; you will not find a bit of her.' In such fear the folks in Hennebon remained five days.

But the countess wrought so well that she had now full five hundred comrades armed and well mounted; then she set out from Brest about midnight and came away, arriving at sunrise and riding straight upon one of the flanks of the enemy's host; there she had the gate of Hennebon castle opened, and entered in with great joy and a great noise of trumpets and drums; whereby the besiegers were roughly disturbed and awakened." The joy of the besieged was short.

Charles of Blois pressed on the siege more rigorously every day, threatening that, when he should have taken the place, he would put all the inhabitants to the sword.