Who was Heleny Korytkówny later known as Siostry Marii Andrzeji, a Visitation Nun, presumably in Poland?

Why is her memoir and correspondence published? Kartki z życia Heleny Korytkówny, Siostry Marii Andrzeji Wizytki Jan Rostworowski Veritas Foundation Publication Center, 1970 – – 168 pages

https://books.google.com/books?id=rYwyAAAAIAAJ&q=Heleny+Korytk%C3%B3wny,&dq=Heleny+Korytk%C3%B3wny,&hl=en&sa=X&ved=2ahUKEwjvwuy08472AhWBdd8KHT0mAkkQ6AF6BAgAEAE

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