In the Diary of Saint Faustina, entry (586), Our Lord says---
And know this, too, My daughter: all creatures, whether they know it or not, and whether they want to or not, always fulfill My will.
I have gone through all 1828 entries of St. Faustina's Diary on multiple occasions and have found no contradictions (save one insignificant date). Therefore, I am convinced of its truth, albeit I am having difficulty understanding what the above quote means.
From a Catholic perspective, what might this mean? For clearly, God does not will the sinner's sin, but rather, permits it (for a greater good, I believe, known to Him. Perhaps this is an answer.)