I admit I could be wrong about her. And you cannot blame a person for the way that she is later used by others after her death. But first of all, dying in a concentration camp does not make you a Catholic saint. I was glad to learn more about St. Maximilian Kolbe, for example, because at first it seemed as though simply dying in a concentration camp was the cause of his canonization. But after learning more, I realized that was the least of his claims to sanctity.
Secondly, it is well admitted by all that JPII creates these canonizations in order to have saints for various ethnic groups and causes. Like Blessed Gianna (or is she now St. Gianna?) being the patron of the pro-life movement. Edith Stein seems to be the saint of Jewish converts and the personalist philosophical movement. That doesn't mean that she wasn't truly holy, but it makes me suspicious.
I admit that I should look into her situation more deeply before passing any judgements, but I turned against her after hearing a program on EWTN with Alice von Hildebrand in which she made Stein into the patron saint of feminism. Perhaps that was a misrepresentation, but von Hildebrand is even considered a traditionalist, so I'm not sure why she would have exaggerated these things.
The Church has always done this.
Do you think that a King of France just happened to be canonized in 1297, precisely at the time when the German Emperor was preparing to seize Burgundy and when Pope Boniface was trying to get the French to intervene in Italy?
Probably not a coincidence, but St. Louis was a saintly man just the same.
Alice von Hildebrand is also worth studying. She and her husband, Deitrich, are famous for their insights regarding Catholic theology on marriage.
She is the farthest thing from liberal feminism - as far as the east is from the west.