At one point I looked over and overheard Nicolò explaining to Carmela about her friend in the window. At first I did not know what he was talking about and then realized he was referring to their reflections. He explained that her friend would do the same things as her but just on the opposite side and that if she walked away her friend would leave too.
They sat in front of the (Dirty) window for sometime just playing, making gestures and funny faces at their "friends".
My favorite part of the whole interaction was when Nicolò leaned over and kissed Carmela on the cheek. He told her that her friend in the window was a beautiful baby just like her.
Imagination is everything. It is the preview of life's coming attractions.