I picked up this series a while ago since it was on sale on audible. Khristine Hvam is a terrific narrator and I enjoyed listening to the three books which she narrates. In particular her Puck and Grimalkin were perfect.
The Iron Queen pretty much wraps up Megan's storyline after the end of The Iron Daughter. I did figure out what would happen throughout most of the book and would get a bit annoyed at how long it took the actual characters to realize certain things. But overall I did enoy the series and recommend the audiobooks.