I've reviewed each of the three books of this trilogy separately elsewhere on Goodreads. In brief: I loved book 1 'Sheepfarmer's Daughter' (4 stars); I enjoyed book 2 'Divided Allegiance' although with a few reservations (4 stars); and book 3 declined into a predictable and somewhat dull affair (3 stars).
Overall: a good read, but if, like me, you really enjoyed the first, don't read on expecting more of the same because the three books are very different from each other.