DNF.

It's a great title, and that's what drew me in initially. But the simplistic narrative style, combined with an almost complete lack of the past perfect tense and most of the other usual mechanical issues, made for a book that failed to grip me enough to stick with it.

The protagonist is, at least, a believable teenager (won't clean her room, secretive, rebellious, deals with issues by ignoring them until she can't any longer). Whether she's also believable as the one person in the world who's a good enough puzzle solver to decode alien transmissions... I didn't get far enough to decide.