After two sojourns into the arena of the Hunger Games, there was no way Katniss could back in for a third go-round. Especially since the flashes Katniss mistook for fireworks at the end of the last contest were actually bombs exploding, marking the attack of the rebels. So where can Katniss go now?
Home. Although there is little point, because President Snow ordered District 12 firebombed as soon as the rebels rescued Katniss, Finnick and Beetee from the clock arena. In the time it took Katniss to recover from her critical wounds, she realized that she was taken to District 13, which was not completely destroyed as the Capitol claimed. The surviving population moved underground and organized a rebel force to overthrow the hated Capitol.