That cover! Beyond gorgeous. I haven't read any books about "alternate" worlds yet. Krista devoured Pivot Point in one sitting, and the idea of two different worlds harks back to that novel (or at least that's what it reminds me of). But this one sounds super cool with the addition of Sasha as a princess. Mix in fantasy with science fiction and I'm there.
Have you heard of this? What are you waiting on? Don't forget to leave you links in the comments!