To start with the good points: I really loved how the city was portrayed in this. Granted, I've never been to New York but I got a real sense of it as a place from this. And the idea behind the story was really interesting.

However, there did seem to be a plot hole. I can't understand why Asterel couldn't see her daughter. I get that it was explained as Sarah not staying two days old forever, and that Asterel couldn't see her older face... but it's not like Sarah was two days old one day and eleven years the next. The change would have been infinitesimal, and if Asterel had been "looking" at her every day she should have incorporated those near-invisible changes the next time she looked at her (which would presumably have been the next day). I mean, I imagine she could see someone she knew if they were wearing different clothes than the last time she saw them, and that's a much bigger change that that between, say, a two day old and a three day old baby.

Alright, so I'm picky. But it seemed a plot hole. And the ending didn't much do it for me... the bait and switch, the sudden onset of extra powers. Also the father... with the best will in the world I couldn't take him or his motivations seriously.

I did like that the dog got a better home, though.