Well...it is factual that none is born mad, so what they have used their lives to do before getting insane or any other state of mental disorderliness will be used to judge them. Posibly, some situation of such are caused carelessly...moreso, even carelessness is also a sin. They will surely be judged accordind to what they've done be4 dt state...their case is similar to one killed by a witch and along the way the witch got converted, who then bears the blame?