Posting at the same time mario........anothe r artist, same name, I believe. I located a death record for Lucille A. Fenton 1912-2001.
"Lucille A Fenton was born on September 18, 1912 and died on February 21, 2001 at the age of 88. This person last resided in Brewster, Massachusetts in Barnstable County."
That Lucile / Lucille Fenton painted landscapes / still lifes.
There is a possibility here. A long shot. The two people were painting the same sbject, say in art class or similar. Slightly different angles of the same woman. The sleeves are the same colour, just different light.
Don't think it's possible for two people to paint their own depiction of a masters work ( say Rembrandt ) and the finished paintings look as identical as they do.
I catalogued this a few years ago
and noticed it's similarity to this by Gabriel Metsu
Definitely an ' homage '.
Also the use of panel for the nun. Usually used by artists up to the mid 19th century, so this painting is slightly confusing ! A clearer image of the sig would help.