Tuesdays at the Castle by Jessica Day George
My rating: 4 of 5 stars
A really cute story about a magical castle that is alive (always building rooms and moving things around) and the royal family that lives there. When half of the royal family is attacked and disappears, 11-year-old Celie and two of her siblings must keep the bad guys from taking over.
I think my 2nd grader will really enjoy this.