The writings of Maria Valtorta should be read by every Catholic. They are absolutely supernatural and from the Holy Trinity. No human mind could make them up. Maria Valtorta was just acting a secretary for Our Lord.
She was a bedridden invalid, writing during WWII Italy. She was a Third Order member of the Servants of Mary. One of the oldest mendicant orders in the Catholic Church. She wrote everything by hand in notebooks while sitting in bed. Her writings were typewritten by her priests/spiritual directors from the Servite Order.
Pope Pius XII ordered that her writings be published. After he died, certain people in the Vatican slandered Maria in the Vatican newspaper. This happened just before Vatican II. Maria Valtorta was no modernist heretic. So her writings were not consistent with the way things were going. They warned of the crisis in the Church.
And everything in her writings are perfectly Roman Catholic, if read in context. The complaints about her writings that one finds online are passages taken out of context. They are doctrinally orthodox. Read for yourself to decide. Do not trust the naysayers.
Tucho got this one right.
Valtorta's books changed my life strongly. They strengthened my faith. I understand why Bishop Williamson recommended them so highly.
Yes, in Montini time, 1966. Check out Ratzinger's books on liturgy, where he mentions Chardin and his omega point. Etc.