All the movie was a dream. Cobb is in limbo all the time, and his wife in real life is still alive(Because when she kill herself ,their were in a dream and she woke up), and the kids, of course. The real Inception was made to Cobb not to Fisher.
Obviously I have an explanation for all this, but that’s my theory.
To Robin Antin? Well, She didn’t know that she had girls with so much to give. They were the mothefuckers dancers and singers and she destroyed that, so, I would incept this to Robin stupid Antin:
“Make the dolls back with all their talent. Nicole is not so much important, all the girls have to sing!”