This description of the book comes from the blurb:

As the only one in the family without magic, Makeda has decided to move out on her own and make a life for herself among the claypicken humans. But when her father goes missing, Makeda will have to find her own power–and reconcile with her twin sister, Abby-if she’s to have a hope of saving him . . .

It’s times like these when I realise how limited my vocabulary is.  Because there’s only so many ways you can say how astonishing a novel is without falling back on cliche and shitty platitudes.  So I thought I’d quote this representative passage instead.

Uncle likes to keep things lighthearted.  It’s important to him to always have a smile on his face.  It keeps his spirits up, and sometimes it prevents people from being too scared when it’s their time and he shows up to ferry them to the other side.  Though sometimes his death’s-head grin just makes them shit their pants with terror.  But, as Uncle says, you win some, you lose some.

Or As Makeda, the main character, says at one point, “Holy flying fuck and a bag of chips!”  That’s how much I enjoyed the shit out of Sister Mine.  Go read it!