"Hadn't they?" she agrees, voice light and easy, leaning against one of the wooden railings and folding her arms, smirking at him in a way she has which suggests she knows everything about everyone.

Sometimes, it's not much of an exaggeration, but the truth isn't really what matters; acting as if you're omniscient is almost as good as actually knowing everything. It's all about bluffing.

"Well, I come as much for the gamblers as for the combatants," she says airily, keeping her eyes on him, a grin on her face which implies that they're in on this together. "Maybe it's best they make mistakes."

...combatants and gamblers alike. No one comes to the Arena looking for happy endings for everyone.