She refused to permit the Queen of Navarre to have any interview with either Charles or Marguerite, unless she was also present; and hesitated at no falsehoods, however outrageous, in order to thwart the efforts of Jeanne and her friends.
The pious queen, however, was more troubled by the extreme and open profligacy of the court than by the political difficulties she encountered and, in her letters, implored her son to insist upon residing at Bearn with his wife, and on no account to take up his abode at Paris.
However, at last the difficulties were removed.

The court abandoned its demand that Marguerite should be allowed to attend mass at Bearn; and the Queen of Navarre, on her part, consented that the marriage should take place at Paris, instead of at Bearn as she had before desired.
She then went to Paris to make preparations for the wedding.

The great anxiety she had gone through told heavily upon her, and a few days after her arrival at the capital she was seized with a fever which, in a very short time, terminated her life; not without considerable suspicions being entertained that her illness and death had been caused by poison, administered by an agent of Catherine.

She was, undoubtedly, one of the noblest women of her own or any other time.

She was deeply religious, ready to incur all dangers for the sake of her faith, simple in her habits, pure in her life, unconquerable in spirit, calm and confident in defeat and danger, never doubting for a moment that God would give victory to his cause, and capable of communicating her enthusiasm to all around her--a Christian heroine, indeed.