Relationship troubles? No problem, place them in a grander religious nutso plot with a Romeo and Juliet undertone, and still make both of them work hard at working together despite difference of opinions. What a concept! 
 This book focuses a lot more on family more than anything else, and it's a toss up whether I mean family as the kind you are born with or that which you choose. Sarah, our intrepid cuckoo, gets her own PoV, and I think I really started liking the change. It certainly gave me a more serious and seriously strange counterpoint to the dancing and the chop-chop. :) Higher math and telepathy? Ooohh.. higher math for the satisfaction of doing it yourself despite the telepathy. Nice. :) 
 There's some interesting plot points going on here, but it's the Romeo and Juliet vibe that got me going. Sometimes getting to know your boyfriend's folks can be a real pain. :) 
 Fun read and I'm in it for the long haul, not that it's particularly *difficult* to get through. This is an addictive UF. :)