Plot hole: When Dahlia is on her cell phone with her lawyer, she goes down into an underground subway and is still talking to him. Her call should have been cut short, because cell phones in NYC don't work in underground subways.
In one scene with Dahlia and Ceci sleeping in the same bed, Dahlia is awoken from a bad dream. The kid rolls over and pulls the blankets over her shoulder. The next shot, from the hole in the ceiling, shows the blankets around her waist.