Saint Maria Faustina Kowalska is a modern Catholic saint having lived as a nun in Poland in the 1920s and 1930s with her death occurring in October 1938. Polish churchman Karol Wojtyła aka Pope John Paul II has been largely responsible for both initiating her canonisation proceedings in 1965 and then formally canonising her on 30th April 2000. In 2011 Saint Maria Kowalska was also made a Doctor of the Roman Catholic Church.
Therefore, her only known comment on the subject of jews that I have been able to find is of interest to us. She writes in her famous diary that:
‘In a private room next to mine, there was a Jewish woman who was seriously ill. I went to see her three days ago and was very deeply pained at the thought that she would soon die without having her soul cleansed by the grace of Baptism. I had an understanding with her nurse, a [religious] sister, that when her last moments were approaching, she would baptise her. There was some difficulty however, that there were always some Jewish people with her. However I felt inspired to pray before the image of Jesus had instructed me to have painted. I have a leaflet with the Image of the Divine Mercy on the cover. And I said to the Lord, “Jesus, You Yourself told me that You would grant many gracious things through this image. I ask You, then, for the grace of Holy Baptism for this Jewish lady. It makes no difference who will baptize her, as long as she is baptised.’ (1)
This plan to secretly and forcibly baptise the terminally ill jewess in the hospital was successfully carried out. (2) Such forced baptisms and demands for conversion are almost universally considered to be anti-Semitic by both historians specialising in jewish history (3) and contemporary jews. (4)
It is also clear from the context that Saint Maria Kowalska – like her contemporary Saint Maximillian Kolbe – was living and thinking in a Catholic environment that was profoundly hostile to jews and Judaism. (5)
Therefore, we cannot but conclude that while Saint Maria Kowalska cannot be classed as anti-Semitic as her implicit use of the definition of a jew as being a purely religious thing is evidenced by her diary entry. She was anti-Judaism and as stridently opposed to both jews and Judaism as the inverterate religious enemies of the Roman Catholic Church of which she was a part.
References
(1) Saint Maria Faustina Kowalska, 2015, ‘Diary of Saint Maria Faustina Kowalska’, 3rd Edition, Marian Press: Stockbridge, p. 355 (2:916)
(2) Ibid, p. 356 (2:917)
(3) For example: Anna Foa, Andrea Grover (Trans.), 2000, ‘The Jews of Europe after the Black Death’, 1st Edition, University of California Press: Berkeley, pp. 94-107
(4) For example: https://forward.com/fast-forward/401047/michele-bachmann-apologizes-for-ignorantly-suggesting-jews-convert ; https://www.theguardian.com/world/2017/dec/21/mormons-holocaust-victims-baptism-lds-church
(5) Bernard Wasserstein, 2012, ‘On the Eve: The Jews of Europe Before the Second World War’, 1st Edition, Profile: London, pp. 39-40; 49-50