First of all, Katniss's sister Prim was killed by a parachute bomb that fell from the sky with toys and gadgets because she was a good healer and she was involved in rescuing the poor Capitol's Capitol street kids late in the war when the victory of District 13 was already assured. katniss saw her sister's demise with her own eyes and had witnessed it earlier on. It was Gale who brought this parachute plan up with the brass when they were analyzing the war. In that situation, there must have been an order from Cohen to carry out the plan. And the situation was so set in stone that the move was unnecessary, but it happened anyway, and humanitarianism aside, Katniss's beloved sister died as a result. Cohen in the later stages of the war clearly realized that Katniss influence than their own, in its unity of the people of the districts after the symbol of the identity of its use, the survival of Katniss became her heart trouble, regardless of the Prim's death is its intentional or unintentional, according to the logic of the Prim is so young, should not be followed by the medical team to come, but she appeared in the battlefield is certainly subject to Cohen's approval. But she had to be approved by Cohen to appear on the battlefield, so Cohen was responsible for Prim's death.

The second question is whether or not there are Hunger Games, which the novel doesn't elaborate on, but my judgment is that there are not. The victors voted to keep the Hunger Games against the Capitol children when Cohen was in power, and Katniss caused chaos by shooting Cohen with an arrow, an act that had a big impact on the announcement of such events. And it was that Limit Race game designer, a Kepitian, who came into office afterward, and it was thought that he wouldn't have done that to those Kepitian children. And the description of that peaceful life in the postscript would reflect the fact that the game doesn't exist anymore, and has even made its way into history textbooks.

The third problem is that what the novel is trying to say is only clear to the author, and readers will vary from person to person. I think there is telling us to forget the hate, but that's not the only thing.

Gale's words, this I don't really understand why he went to the second district. It could be that he had a good job after the unification of the whole country, and staying in District 12 would have had an effect on Katniss, not only by constantly reminding her of those unpleasant memories, but also by making her embarrassed with Peeta.

Last question, President Snow has been captured and is certain to die, but in a different way. Cohen asked her to shoot Snow, partly as part of her pact with Katniss at the time, and more symbolically in front of the people of the districts.Katniss's earlier conversation with Snow showed her that Cohen was no good, and might even be more authoritarian. She herself on the other hand remains still a pawn. And Cohen's hatred for killing her sister made her choose to kill Cohen.