"The story of the young woman whose death I witnessed in a co..." — Viktor E. Frankl quote meaning

The story of the young woman whose death I witnessed in a concentration camp. It is a simple story. There is little to tell and it may sound as if I had invented it; but to me it seems like a poem. This young woman knew that she would die in the next few days. But when I talked to her she was cheerful in spite of this knowledge. "I am grateful that fate has hit me so hard," she told me. "In my former life I was spoiled and did not take spiritual accomplishments seriously." Pointing through the window of the hut, she said, "This tree here is the only friend I have in my loneliness." Through that window she could see just one branch of a chestnut tree, and on the branch were two blossoms. "I often talk to this tree," she said to me. I was startled and didn't quite know how to take her words. Was she delirious? Did she have occasional hallucinations? Anxiously I asked her if the tree replied. "Yes." What did it say to her? She answered, "It said to me, 'I am here-I am here-I am life, eternal life.