Her sister-in-law Isabella of France was a witness against her, and Margaret was imprisoned for the last two years of her life, along with her sister-in-law Blanche of Burgundy.
Cumnata ei Isabela a Franței a fost martor împotriva ei, iar Margareta a fost închisă în ultimii doi ani de viață împreună cu cumnta ei Blanche de Burgundia.