Continuity mistake: The morning after her wedding night, we see Mary walking with Anne telling her about the wedding night, notice Mary's braids in her hair, one braid is in a circle, yet in the next scene where Mary and Anne are folding a blanket, her braid is now down in one long braid. (00:12:20 - 00:15:30)
Continuity mistake: When George comes in to get Anne before going into Mary who is getting ready for her wedding, Anne's headress changes, at first she is seen wearing a more decorative one and as her and George come around the corner and head to Mary's room her headress is completely different. (00:12:15 - 01:12:15)
Chosen answer: It is unknown who the older girl is, but probably the child of a close relative. In the movie (which significantly differs from the novel and from history), Mary is shown to only have given birth to one child (King Henry's son) before her marriage to William Stafford. Therefore, the girl could not be Mary's child by her first marriage.
raywest