My own (now 21) son lost his best friend in a t-bone crash up on the highway about 3 miles from here and took it (still does) pretty hard.
When it happened I pointed out that one of the things that I love most about being Catholic is that we have a better (IMO) way of dealing with death than most other faiths.
I talked with him about 2nd Maccabees 12:46 and pointed out that we are able to offer up prayers for those friends like his. The guy wasn’t Catholic but he was a very devout Christian, so this passge was also relevent:
Book Of Wisdom Chapter 3
The happiness of the just: and the unhappiness of the wicked.
1 But the souls of the just are in the hand of God, and the torment of death shall not touch them. 2 In the sight of the unwise they seemed to die: and their departure was taken for misery: 3 And their going away from us, for utter destruction: but they are in peace. 4 And though in the sight of men they suffered torments, their hope is full of immortality. 5 Afflicted in few things, in many they shall be well rewarded: because God hath tried them, and found them worthy of himself.
6 As gold in the furnace he hath proved them, and as a victim of a holocaust he hath received them, and in time there shall be respect had to them. 7 The just shall shine, and shall run to and fro like sparks among the reeds. 8 They shall judge nations, and rule over people, and their Lord shall reign for ever. 9 They that trust in him, shall understand the truth: and they that are faithful in love shall rest in him: for grace and peace is to his elect
I also pointed out the wealth of wonderful Catholic prayers for the dead and that even though many Catholics may have forgotten it we are supposed to remember the faithful departed along with our grace after meals with something like “May the souls of all the faithful departed, by the mercy of God rest in peace. Amen” So they are never forgotten.
I hope this helps some.