Midwest Book Review included The Iron Bodkin in their November 'Reviewer's Bookshelf'. Here's what they said:
It can be hard to protect something you can't see. "The Iron Bodkin" tells the story of a young man in in a family of witches, Lux. Turning his sister [invisible] in a world where that talent is taboo, he can't cure his mistake without outing himself so he has a very real problem on his hands. Racing against time and the inquisitors, "The Iron Bodkin" is a fun and exciting read that young readers will love.
And here's the link to the actual review.