She was not a Catholic her whole life and when she became one she was just learning. Nothing in her convent writings appears "totally unacceptable" to me.
I cannot understand how she could have been approved for canonization.
I believe you.
Perhaps she retracted all her errors.
Or perhaps her "errors" weren't errors at all, or perhaps the original German did not convey the sense you extracted from the translation.
Or perhaps her canonization was intended to be a vicarious "baptism" of Husserl.
Or perhaps you're grasping at straws.
Here is a person who gave her life in conformity to the suffering of Christ, endured horrors we can't imagine with an unshaken devotion to Jesus, and you think it was all a conspiracy to to "baptize" Husserl.
You disappoint me.
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.