This is a crazy science concept that may or may not be too far off. But is it ethical? 
Claire wanted so desperately to have another (this time healthy) child after her son's death that she really didn't think about the consequences or ethics of what she asked Dr. Rob to do. She barely knew him or Jillian, his postdoc! Myself, I didn't agree with this methid to get a healthy child. I would have just tried again the natural way and see what happened. I did admire Rob though (except for the skipping the trial and having an arrest water) 
I figured a few things out along the way, but that didn't stop me from enjoying the book. I'm surprised it took so long for Jillian to find them.... All because of Abby and her school project. A good thriller and very satisfying ending I thought!