I notice the girl in the video who lived, didn't age at all between the time when her sister/friend died and was resurected. There wouldn't have been as much of an emotional impact if the girl that lived had become an elderly grey haired old woman in the intervening years.
This was all very calculated and it didn't hurt the agenda to play a kingdom song in the background. They wanted everyone viewing this, no matter how old they are, to see themselves as they do in their own mind, as still being young. They wanted to give the impression that the resurrection would happen soon after their loved one dies. A more realistic video would show a widow or a mother who lost a child and grew old spending her life waiting decades for the promised resurrection.