I located three women named Margaret who were computer pioneers. From a quick read of their biographies it seems unlikely that any would have crossed paths with Barker Devin. However, Margaret Oakley Dayhoff was in New York during WWII. This excerpt from Wikipedia: http://en.wikipedia.org/wiki/Margaret_Oakley_Dayhoff
"Dayhoff was born an only child in Philadelphia, but moved to New York City as a child. Her academic promise was evident from the outset; she was valedictorian (class of 1942) at Bayside High School, Bayside, New York and from there received a scholarship to Washington Square College of New York University, graduating magna cum laude in mathematics in 1945."