Lisa Moore Ramée

Walt's magical ability to bring maps to life puts him, his twin sister Van, and new friend Dylan in danger when an enchanted heirloom strands them in the fantastical world of Djaruba and they discover a malevolent rival to the kingdom, a fellow mapmaker, has nefarious plans for Walt.

"A friendless girl who has developed a knack for keeping her head down at school resists a red-headed newcomer who wants to make friends, before the two are paired for a class assignment that she hopes will secure her position on the debate team."--NoveList.