"It is no trouble." She ignored his scowl as she took the book and opened it. She spent fifteen minutes poring over it - not as useful as she'd hoped - the closed it and handed it to him. "Try chapter eleven, subsection three," she said mildly; if he was truly after the same topic as she, that would be the only thing to catch his interest. "I will take this one, if you've not yet had a chance at it."
Reaching for a scroll near the bottom of the stack, she unrolled it and went back to her dictionary when it turned out a bit more complex than she was comfortable with deciphering.