I never knew that the little Therese with through a rough time with the “dark night of the soul” to the extent that from your discription it was at times hardbreaking. Thanks for your posting.
If you’re interested in more reading on this, “St. Therese of Lisieux, the Last Conversations” is a good source. There’s also a book called “Maurice and Therese,” which is a collection of letters she exchanged with a missionary priest. This goes into detail about her spiritual experiences during the last years of her life.