On this plane of existence, there are many injustices that the human mind cannot fathom. Among these are the heart-rending trials of the innocent. Indeed, even the Prophets of God Themselves have borne their share of grievous afflictions in every age. Yet in spite of the evidence of all this suffering, God’s Manifestations, Whose lives and wisdom show Them to have been far above human beings in understanding, unitedly bear testimony to the justice, love and mercy of God.
With regard to the spiritual significance of the suffering of children “who are afflicted by the hands of oppressors”, ‘Abdu’l-Bahá not only states that for those souls “suffering is the greatest mercy of God”, He also explains that to be a recipient of God’s mercy is “far better and preferable to all the comfort of this world”, and He promises that “for those souls there is a recompense in another world”. Thus:
As to the subject of babes and infants and weak ones who are afflicted by the hands of oppressors: This contains great wisdom and this subject is of paramount importance. In brief, for those souls there is a recompense in another world and many details are connected with this matter. For those souls that suffering is the greatest mercy of God. Verily that mercy of the Lord is far better and Preferable to all the comfort of this world and the growth and development of this place of mortality.

Thank God I found the Faith and had it to use as a role model!