<P> As rebel forces gain ground, Snow invites fleeing Capitol citizens into his mansion for protection . Katniss and Gale join the crowd, posing as refugees . As rebels arrive and attack, Peacekeepers capture Gale and herd Capitol children toward the palace gates . A hovercraft with Capitol markings flies overhead and drops small parcels into the crowd . The parcels explode, killing and injuring many people . A team of rebel medics attempt to help the injured, including Katniss's sister Prim . As Katniss rushes forward, a second wave of bombs detonate, killing Prim and knocking Katniss unconscious . </P> <P> Upon recovering, Katniss learns the Capitol has been conquered and that Snow is captured . Katniss confronts Snow in his greenhouse . He explains to her that Coin ordered the airstrikes on the mansion using Capitol aircraft to make it appear that he would kill their children and to lead his soldiers to side with the rebels . When Katniss tells Snow she believes he is lying, he reminds her of their promise only to be honest with each other before the Quarter Quell; she then realizes the attack matches a technique Gale had developed earlier; bombing an area, then again to kill medics and survivors . When Gale cannot assure to Katniss that the bombing method was not of his design, Katniss abandons him in shock . Coin declares herself as the interim President of Panem and invites the remaining Hunger Games victors to vote on a proposal to have another Hunger Games using the children of the Capitol as a symbolic gesture to satisfy the districts . Peeta, Beetee and Annie disagree with the idea, while Johanna and Enobaria agree . Katniss votes yes in exchange for the right to publicly execute Snow and to avenge her sister's death, having realized that Snow was telling the truth about Coin in the process . Haymitch considers the situation and then swings the vote in favor . </P> <P> At the execution, Katniss kills Coin instead of Snow, thus avenging Prim . A riot ensues and, after Peeta stops her from committing suicide via pills, Katniss is taken into custody while witnessing Snow get beaten to death by charging rebels . Once it is all over, Katniss receives a letter from Plutarch Heavensbee on her actions and is assured that she will eventually be pardoned by the newly appointed President of Panem for her crime and will be able to return to District 12 once the dissension quiets . At District 12 she is joined by Peeta, who has recovered from his condition . Commander Paylor is elected the new President of Panem, and Katniss, Peeta, and Haymitch bond over their shared trauma . </P> <P> In the epilogue years later, Katniss and Peeta play with their two children, and Katniss realizes she made the right choice when she tells her infant that "there are much worse games to play ." </P>

Who is the letter from in mockingjay part 2