Her most famous image is that of the body of the statue of the goddess Diana by Augustus Saint-Gaudens. A biographical snippet related to that is here.
As this link mentions, she posed for Thomas Wilmer Dewing. She also posed once for Dennis Miller Bunker.
If readers know of other paintings or sculptures based on Dudie, please let us know in a comment.
This and all but one of the paintings below are by Dewing.
Based on facial features, my guess is that this painting and the one above it feature Dudie.
This was by Dennis Miller Bunker.