Her thought-pattern is running along the same lines: motivating Harry to abandon his fruitless quest for the Deathly Hallows and concentrate on the real task at hand is their first priority.

Without the three of them in agreement, Hermione is well aware that they won't get very far. After all, without Ron, all they'd managed to do was nearly get themselves killed. (Not to mention: she'd accidentally destroyed Harry's wand.)

(She's still guilty over it.)

"Thank you, Ron," she says suddenly.

It's not exactly 'I forgive you' yet, but his support - his being there again - is important to her.

(It's very important to her.)