[QUITE SO-- or, no. It would seem more accurate that the thing which surprises her is the fact that he's thanking her.]

That's... not necessary. It's not fair for me to know something the rest of you don't. Besides-- I figured it was something you of all people would be interested in.

[But as she talks she thinks again about the first bit and-- it sounds too much like she's ignoring the gratitude he probably worked hard to express.]

No. That's not right. What I should say is... you're welcome. If you have any questions, you can ask me. But I'm not sure how useful it will be.