I understand the YT description and wikipedia say she directed it in collaboration with Alexander Hammond, but I can't find any contemporary or scholarly source to confirm this.
Everything, including the Wikipedia source [0], points to her involvement as being the narration of a different version of this film, where she is credited. That version is linked in a sibling comment.
She contributed some words used in title cards in the second version of the film. There’s no evidence that she had any other involvement in either version.
