Pain of Blessed Theresa's Prayer

Time Magazine has an interesting review of Mother Teresa: Come Be My Light (Doubleday), by Father Brian Kolodiejchuk, the postulator for her cause for canonisation. the review focuses on the spiritual emptiness of the Blessed Theresa of Calcutta, it is entitled "Mother Theresa's Crisis of Faith". Having had a quick scan it actually seems to be a rather sensible article on the pain that is often part of prayer by DAVID VAN BIEMA .
Here are some extracts from it:

"It is not enough for us to say, 'I love God, but I do not love my neighbor,'" she said, since in dying on the Cross, God had "[made] himself the hungry one — the naked one — the homeless one." Jesus' hunger, she said, is what "you and I must find" and alleviate. She condemned abortion and bemoaned youthful drug addiction in the West. Finally, she suggested that the upcoming Christmas holiday should remind the world "that radiating joy is real" because Christ is everywhere — "Christ in our hearts, Christ in the poor we meet, Christ in the smile we give and in the smile that we receive."
Yet less than three months earlier, in a letter to a spiritual confidant, the Rev. Michael van der Peet, that is only now being made public, she wrote with weary familiarity of a different Christ, an absent one. "Jesus has a very special love for you," she assured Van der Peet. "[But] as for me, the silence and the emptiness is so great, that I look and do not see, — Listen and do not hear — the tongue moves [in prayer] but does not speak ... I want you to pray for me — that I let Him have free hand."
Lord, my God, who am I that You should forsake me? The Child of your Love — and now become as the most hated one — the one — You have thrown away as unwanted — unloved. I call, I cling, I want — and there is no One to answer — no One on Whom I can cling — no, No One. — Alone ... Where is my Faith — even deep down right in there is nothing, but emptiness & darkness — My God — how painful is this unknown pain — I have no Faith — I dare not utter the words & thoughts that crowd in my heart — & make me suffer untold agony.
...

So many unanswered questions live within me afraid to uncover them — because of the blasphemy — If there be God — please forgive me — When I try to raise my thoughts to Heaven — there is such convicting emptiness that those very thoughts return like sharp knives & hurt my very soul. — I am told God loves me — and yet the reality of darkness & coldness & emptiness is so great that nothing touches my soul. Did I make a mistake in surrendering blindly to the Call of the Sacred Heart?

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I can't express in words — the gratitude I owe you for your kindness to me — for the first time in ... years — I have come to love the darkness — for I believe now that it is part of a very, very small part of Jesus' darkness & pain on earth. You have taught me to accept it [as] a 'spiritual side of your work' as you wrote — Today really I felt a deep joy — that Jesus can't go anymore through the agony — but that He wants to go through it in me.