Read-aloud recommendations requested!

A BoD reader is looking for good read-alouds for his "snarky-smart precocious almost-12-year-old" daughter. Over the past few years, they (he, his wife, and his daughter) have read all the Harry Potter books, some Percy Jackson, and The Hunger Games. Twilight was (hilariously) a bust.

He's looking for something "deserving of a long-term project", that'll be light enough for his daughter but also enjoyable for the adults in the room. His daughter "doesn't hesitate to ask about words or concepts that she doesn't understand, and we then stop and define or discuss as needed", so content isn't necessarily a huge issue (within reason).

I suggested Bartimaeus and Sally Lockhart (she's read Sally), L.M. Montgomery and Diana Wynne Jones (she's read Howl), and offered to throw the question out to you all.

He followed up with a few more details about her taste: She's open to any genre, but she's most drawn to books with a contemporary feel. She loves fantasy/adventure, but likes "present-day language, wit and perspective". So we're looking for "books that have enough of this to keep her attention, but the depth and complexity to be rewarding when read aloud".

Thoughts? Suggestions?