(SPOILERS) Prim is Katniss' little sister. Her full name is Primrose Everdeen. She is 12. Katniss volunteered to take Prims place at the reaping. Prim had a scruffy cat that she named buttercup. Prim's mother was an apothecary and Prim helped her treat patients. In the book Mockingjay Prim worked as a nurse in district 13 with her mother. Prim died when she was helping Capital children that were injured from exploding parachutes. When she was helping the other half of the parachutes exploded, killing her.