Is God Indifferent?
Since He is taking care of everything , accounting every action, managing a grand court to reward and punish the people for their deeds, will bestow eternal blessings upon the ones who passed His test, He cannot be indifferent. His apparent silence on pain in this world is the part of His scheme of results which He will show in the hereafter. Still whenever and wherever He likes, He changed the course of normal actions to produce desired results as we see in the story of Musa and Khidr in sura Kahaf