So a friend of mine, recently ended a friendship (non-romantic) and there was no closure in it. This friend accepted fault in the failure of the friendship, but the other person refused to accept fault and just cut them (and by extension all of their extended friends) out. So there is no peaceful ending to this which sucks.

Yes, I know - stay in my lane and let the friendship fallout be what it is, but after talking with them, they are in a serious disarray emotionally. Besides just keep talking to them and allow them space to work things out, what else should I do? Go do stuff? Tell them to eff that person?

All advice is appreciated. TIA.