I just received my copy I ordered from the Spirit Daily website called Offering of Suffering by Paul A. Mihalik.
It has 101 pages.
Ch. 1 heading reads Suffering, Offered in the State of Grace, is Redemptive. Then descriptions of the type of sufferings of many Saints: Padre Pio, St. Therese, St. Peter Alcantara, to name a few. Ch 3 header: the Apostolic Letter Salvifici Doloris (The Christian Meaning of Suffering) Other headings: Suffering for Reparation and Conversions of Souls. Words of Jesus and the Blessed Mother to Sr. Josefa Menendez, a victim soul.
I think this is the just the book you’re looking for.