Suzanne Collins said this quote
“ Looking at Prim's face, it's hard to imagine she's the same frail little girl I left behind on reapimg day nine months ago. The combination of that ordeal and all that has followed - the cruelty in the district, the parade of sick and wounded that she often treates herself now if my mother's hands are too full - these things have aged her years. She's grown quite a bit, too; we're practically the same height now, but that isn't what makes her seem so much older. ”