Bishop Roche's homily appears to me to capture this complexity very well.
She was only a nun for nine of her twenty four years yet, today, she stands alongside some of the greatest thinkers and philosophers of her age, as one who wrestled with the deepest problems of human existence, the enigma of human suffering and the mystery of despair. And now she stands among the Doctors of the Church – those theological giants, and mystics, to whom has been revealed insights into the divine life that are important for Christian living.
And these words surely indicate a relevance of her teaching and life to our contemporary situation:
He led her into the deeper trials of the spirit where the soul was purified because against all the odds, in the darkness and the sense of abandonment, and the questions that arose as to whether God was there, she remained faithful because she knew this was the ultimate test of love. She described this experience as a night of nonexistence where she mingled with the spirits of atheism and unbelief.