I adore the colors. They're glorious. I also love the text treatment - the fonts, plus the fact that it's not too little nor too much text, just perfect. What doesn't work for me though is Natalia's facial expression. She looks sour. After you look at the cover for a while it becomes ok, sort of, but when you first glance at it, it's like - what stink is she smelling?
From the preview, I too think Maryna's cover would've made a better statement as the main cover.