Just FYI, there is NOT a divine reason for everything that happens, unless the divine reason is that all of existence happens within a sacred context in the broad sense. But no, HELL NO, suffering is not part of God's "plan" for anyone's enlightenment.
If there is a divine "plan" for our lives it is concerned with the exercise of freedom, the gaining of wisdom, the learning of compassion, the full flourishing of the soul. Suffering IMPEDES these things and this grieves God.
If we think of God in a personal way or in a more mystical way as an impersonal force - no worthy concept of Ultimate Reality or sovereign moral grounding that moves through history + creation has a "plan" for anyone's harm. Period.