The passing of a force within a body to the limitlessness is seen with regret and much sorrow in many cases. It is seen that the grievers are grieving for the loss of the departed. However infact the loss is within each of the persons attenting. The loss is inside and the repair is underway to heal the loss of a physical presence that we keep in our own minds.
So I conclude that the grief is not for the departed at all. The departed is now free. without body – without much of the pain associated with having a body. Be aware though that links bindings that exist between all people and that person of varying strengths keep them somewhat restrained still. The grieving needs to occur to break the restraint and allow that spirit the freedom to do whatever is in their journey to do.
and of course letting go is good magic training.