I don’t know why it has not been published in full, but my first guess is that whatever it says may be a lot of nonsense.
Bear in mind that the Age of Revelation has closed. This has been the official position of the church since early in the first millennium. This was the position used to condemn heresies like Montanism.
No one is under any obligation to believe anything revealed by any vision whatever, yet people will see this stuff being read out aloud by a Pope a having the “Good Housekeeping Seal” of religion. In other words, it could be dangerous to release this stuff through the Papal office and give the erroneous impression that the infallibility of the Pope is behind whatever it states.
There might actually be something in there that contradicts church theology. Sister Lucy was not gifted with the charism of infallibility, and visions and messages from beyond cannot be guaranteed to be genuine, or guaranteed to be accurately interpreted by the visionary.
They might actually be nothing more than the products of an overactive imagination.
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