The illness may not have been brought by God, but He can use it for our sanctification.
In these, and any other tough situation I pray that God will help me to accept His timing and His will.
Did you see the discussion over on the Orthodox Inquirer's group on the subject of suffering and illness? One book I suggested there, which I think is one of the best on the subject of Theodicy is "The Doors of the Sea: Where Was God in the Tsunami?" by Hart.