I don't know about this one. She got a Ph.D. in Mathematics from Yale when she was 27. This was in 1934, before Computer Science was an established academic field (it was the 60s before anybody got a "Ph.D. in Computer science"), so everybody was coming from some other academic background, often maths/engineering/physics.
And honestly the idea that a PhD in Mathematics from one of the top universities in the world could easily transition into CS or software engineering is one of the least controversial ideas out there.
