Havenstar

The Eight Stabilities are islands of order surrounded by corrupting, lethal chaos-and the chaos is encroaching.

All Keris Kaylen ever wanted was to be a mapmaker like her father. Instead, she finds herself on the run into the realm of Carasma, the Unmaker Lord of Chaos. When her path crosses that of the traitorous aristocrat, Davron Storre, she's way out of her depth, with no idea that the magic map she's inherited might make a difference to the world...