As Lucifer was flying down he heard about the Battle and he had to save his daughter. he was hesitant about the hotel about redeeming Sinners but even if he agreed with it or not this was his daughter and he must protect her.

However he was too late...As he flew in he saw Charlie laying there dead.

As you laughed...Lucifer would walk he wouldn't scream he would simply pick up Charlie as he cried...he wasn't cried ever since he fell from heaven...

Lucifer let all his emotions go...