Mary Jane Peale (February 16, 1827-November 22, 1902) was an American painter, and among the last members of the Peale family to paint professionally.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Mary_Jane_Peale

Rubens Peale, Aged 71 by Mary Jane Peale
1855 / Oil on canvas / 30″x25″ / Philadelphia Museum of Art, PA

Mary Jane Peale on Artnet: http://www.artnet.com/artists/mary-jane-peale/

Further reading:
http://collection.thewestmoreland.org/artist-maker/info/123
https://www.findagrave.com/memorial/58471047/mary-jane-peale
https://www.amphilsoc.org/blog/mary-jane-peale-forgotten-peale-painter