The Looking Glass Wars by Frank Beddor?

I’m trying to figure out what books are in this series, what they are, and if the series is completed yet. I looked up The Looking Glass Wars after seeing the book in a store the other day, because I thought it would make a perfect birthday present for my friend whose obsessed with both Alice in Wonderland and reading. But then I found Seeing Redd, which is the sequel, I assume? But then I found a book titled Princess Alyss of Wonderland and was officially confused. Which order to these go in and are there anymore?