There's no star amount for "eh, it wasn't bad. I finished it and will probably read the sequel" although, possibly more in the hope that something interesting and unpredictable will happen to the characters.
That was my biggest problem with the story - from the first page to the last, I could predict every single plot twist. The characters could have been interesting (though many were familiar archetypes with little of their own three dimensionality) but she just never came out and surprised me.
So, certainly not a bad book, but nothing to write home about.