@RobbyBevard:
Thats the reaction to apparently seeing them hit by a deadly attack. Its not actual mourning or reflection. We get reaction shots all the time. And then usually the guys end up fine somehow or another (Well, Pauly was really good with ropes…) What we don't get it weight to the losses.
Then, this should serve: http://www.batoto.net/read/_/106234/one-piece_ch670_by_mangarule/15
I think that silent panel with Smoker/Tashigi was a pretty significant reflection, but I don't know to what extent it fits your criteria.
Monet was happy to give her life pushing the button and taking out a bunch of Doflamingo's enemies. She failed at that. So, she no longer dies with her goal accomplished, she doesn't die happy, ergo, she is still alive.
The reason she won't die is because she didn't get to die smiling? She was smiling miliseconds before dying. The way she was ABOUT to die was satosfactory to her. To me, that counts as something. Also, does that mean Vergo's dead, then? His last panel was him smiling, and then he went kaboom.
Yet, by Shounen logic, and being One Piece the king of shounen, we can agree his situation is less lethal than Monet's.
A direct stab to the heart is probably the most lethal attack in One Piece ever. It probably breaks all the rules of One Piece that we've come to accept to this point, even if unwillingly, but what if for ONCE, she dies because the attack she recieved is 100% lethal? Symbolism aside? (Even if, as I said, she got an immensely simbolic moment right before her unexpected death; if she were to not die now. . .what? She repeats said moment at another time, first checking that noone is gonna backstab her? Anticlimatic, ain't it?).
Which, by the way, brings me to this: sign me up on the "SHE'S DEAD" camp. I might regret it in a few months when it's revealed she's alive, but for now, I'll believe that she died.
Doesn't necessarily mean that I like it (I like Monet, and I don't know if her role is over, considering her harpy transformation at one point in time that we don't know why it happened, and the Chopper scene is still mighty weird to me), but I think she got enough closure; and, yes, she died by being backstabed, but her coda is a sadistic, moronic comment by Law. A novelty in the One Piece world but, hey, why not?