Мафия 62. The Witcher

Regarding the town killing a town member (a likely murder) in our case, this is very possible (without analyzing the other NDs, it's just that on this forum they might do that - kill without proper in-game reasons; example: Locke killing me in the X-Men Mafia - it was done out of revenge)... Now, I'm worried about one thing: does it make sense to comment on who among the players is "The Grave"?

If the murder was by the town, are you saying that neither mafia shot, or both encountered self-defense?
Of course, the town could have shot too, but I think the mafia shot at Orton.
You can certainly express your opinion, but I don't think it will do anything. Because 4 people in the mafia group could have agreed that it's worth eliminating a dangerous player and one they don't particularly like at the same time. And if the town shot, I don't think it's worth revealing the town shooter.

Added after 12 minutes

I don't think it would be beneficial for Declan to use his ability on the first day... Moreover, even now, there is a tiny chance that Thorium is a mafia member...

I would have used it. First, Thorium was more likely to be a town member than a mafia member.
Second, Golan Vivaldi would have learned about my role, regardless of which side Vivaldi was playing on, I would have tried to figure him out based on his posts and either already coordinated my actions with the supposed Vivaldi in the thread, or added him to the list of suspects. Revealing him and revealing my role could also provide some information.