They have an imprimatur
I never said they were accurate or fraudulent,
I simply said that is what she supposedly dictated to her writer, to write.
There are a number of saints who were illiterate, but who dictated books to scribes to write for them.
If it has an imprimatur it means it does not contradict the faith, and is allowed to be read by the faithful. And yes the Catholic Church teaches private revelation, until completely approved, can be prone to error,
Some saints predicted the end of the world during their lifetimes and were wrong,