Well, Luther clearly calls the Blessed Virgin Mary the Mother of God and throughout the document he acknowledges that Peter was the first pope.
His one mention of the Mother of God follows:
75. To think the papal pardons so great that they could absolve a man even if he had committed an impossible sin and violated the Mother of God -- this is madness.
Though he mentions Peter it is to complain aganist the blasphemy of him.
77. It is said that even St. Peter, if he were now Pope, could not bestow greater graces; this is blasphemy against St. Peter and against the pope.
Do you have a "special" version of the 95 Theses?