Anyone who thought this (Spoilers inside)!!!!

Pretty sure the scene was meant to depict Celeste as fraught with guilt looking for her missing husband. She might have suspected Jimmy but likely was too weak to even ask.

He killed sixteen Czechoslovakians. Guy was an interior decorator.

I was totally expecting it.

She was a coward and a backstabbing snitch that threw her husband to the wolves, knowing full well what would happen. If she were to kill someone it should have been herself.

The kids, yeah. But Jimmy? He ended up being wrong, but his intentions were pure. Put yourself in his shoes. Would you turn yourself in? I wouldn't. Spit happens. Hell, the mope even admitted he did it. And we should all be so lucky to have a wife like Jimmy's.

Celeste took a gamble that in betraying Dave and trusting Jimmy, she and her son would be given mercy, acceptance, and more importantly protection by Jimmy and his wife for life, especially as Jimmy is about to restart his criminal empire and be a "King". But the ending proves that her gamble doesn't pay off, and she is left alone on that sidewalk, hated by her son, wondering when her "King" will come home as she meekly looks at Kevin Bacon and is ultimately viewed as a weak spirited woman with no integrity by the community. Meanwhile, Jimmy's violence is rationalized as justified grief masquerading as misguided justice, but it doesn't really matter because all that is expected of men like Jimmy is that they go on these violent sprees every once in a while when they are crossed, so just get out of their way. This one time, he is spared mercy, but the next time he goes off, justice won't be so gracious.

(Sidenote) Notice the shot of that Celtic tattoo when Laura Linney walks into the bedroom when Jimmy tells her what he's done. I think it was interesting that they went with a design that has a clover with 3 leafs instead of 4, like you normally see with Irish Celtic drawings. My impression is that the 3 leaves represents the paths each friend takes, and the rod going down the leaf in the middle could be representative of Dave's fate, how lines in the sands are drawn when there is betrayal.

Dave was too broken and weak to go on, and he was an easy person to make an "example" of to the rest of the community. You come for a man's child, especially a "made" man, and there will be hell to pay, and it doesn't matter whether you are guilty or not.

I definitely think, from the way the son wouldn't acknowledge the Mom and seemed disengaged, that Jimmy will meet his end at the hands of Dave's son. The way that Kevin first looks at the baseball float, then looks at Jimmy as he comes down the stairs and then puts his glasses on, and then he gestures...there's a strong implication there.

But anyway, lots of regal imagery, like when Jimmy talks about Katie's mom almost being like royalty.