Okay I finished the quest. For anyone wondering the quest goes like that:
> You go to Bernard to receive the letter (in the savegame I gave you, Jastey, Bernard didn't give me the second letter)
> you go to Lynn
> She asks you to go the cemetery and kill all the bodyguards.
> after helping Lynn, at the entrance of the cemetery a guard will spawn and arrest you. You don't need to rest in the inn.
Why did I think I had to rest in the inn after killing everyone at the cemetery? For two reasons:
1) In the last quest, another npc will appear when you are talking with Lynn about the final quest and this npc tells you:@620 = ~When you are done, spend a night here. Lynn will find you.~
2) Add on top of that the quest fizzled, because no guard spawned at the cemetery's entrance (at least in my prior games) so I went there resting because I thought that I had to rest there
TL;DR finished the quest, but:
1) my savegame will show you there is some sort of issue with Barnard not giving you the letter (and given that I was restoring fade, I already destroyed bodhi in that savegame).
2) No other issues showed themselves (in my EET game the guard at the entrance of the cemetery didn't even spawn even after using the commands I wrote in the first post, but only you can check that, because I don't have that savegame anymore).