Well, great literature it ain't ! But as a "good read" for the train / plane journey it will do nicely. Take it on holiday. It is predictable and the ending is contrived to make use of the heroine's fearsome talents, the result of her equally contrived childhood. But that's the genre. On the plus side, it's a page-turner, all the characters are individual even if not fully human - only the villain really lacked depth - and he had plenty of significant menace. The plot had some nice twists and turns and the hero wasn't all conquering. I enjoyed it and read it almost at one gulp and then asked myself: Shouldn't I have been reading something more worth while ? Probably not: it was a good yarn to relax over.
There was one loose end: I really did want to know if the Aborigine Tribe that Meg had been raised by really were wiped out by a measles epidemic. I think she should have tried to find out.