Not bad.  I wish the author hadn’t tried to rhyme as often as they did.  They were at nicest harsh.  Part of the story is typical 12 days of christmas cadence, then the other parts are not, and that is where the author rhymes.  It just doesn’t work.  But at the same time, i liked the story and thought it was fun (but that maybe because I myself am a big sister with a Sammy (or Danny) of my own.