I love the book True Grit. I have always appreciated westerns and the old American frontiers and this book captures it beautifully. But then you have the main character of Mattie, who although a child, is headstrong and sharp.
It is a wonderful book isn't it?  Mattie is amazingly tough, and won't let people talk down to her, an incredibly interesting character.  What do you think of her relationship with Cogburn, how they got along through it all?
Yes she's great. I imagine quite unique too for the time it was written. I think hers and Cogburns relationship was fascinating. He's such a rough, tough, no nonsense man who's so at home on the frontiers. They are polar opposites basically and their relationship is almost adversarial at the start. But by the end, I think he respects her a lot. 
He is such a fascinating character as well.  He has a notorious reputation but still manages to get results.  There's one point in the book where he mentions how much he's impressed by Mattie, and how much she reminds him of himself.  What do you think are some of their best similarities?