If you are planning on reading Geist please do!!! You won't regret it. I ordered it off Amazon and was meant to let my partner read it first but couldn't wait.
I read it in two days and couldn't put the book down. I felt hungry for more at end of the book and have actually pre-ordered the sequel tonight which is out next year I think.
The characters had plenty of depth and it was easy to be pulled into the world and enjoy hearing about feisty Sorcha and the mayhem that seems to emerge around her as the story progresses. The fantasy world came alive and I was disappointed to put the book down. I now have of course by finishing it so speedily and enjoyably allowed the book to be read shortly by my partner.
I discovered Philippa by listening to Weavers Web which I would also highly recommend!