If a young child passes away, will he be a young child in paradise? Similarly, if a mentally ill person dies will he be in the same state in the afterlife?
Children who die will be enjoying the Mercy of Allah near the gates of Paradise, when angles tell them to enter the Paradise, they will say: We are waiting for our parents. This is in authentic Hadeeth.
Mentally ill persons and all ill persons who die will not be ill in the Paradise.
Wassalam.