What if before she went into the games Rue found time to write letters to the people she loved? This is how I think they would have gone.

Mama,

I love you so much. And I know how hard this must be for you, but I wanted to let you know that you were the best mama anyone could ever have, and although I know I didn't always appreciate all the things you did for me, I'm sorry. I know you were only doing your best. And I will always miss the way your hugs made me feel safe, like nothing else could. I hope the others will be okay without my tesserae to help you, but I know you'll make it somehow. If you can, don't let any of the others take tessarae. I wanted to let you know I'll pass on your love to Grandma, and I'll be waiting for you wherever I go okay? Thank you Mama.

Your little girl always,

Rue xx