Uncharted 4: Thieves at the end.

[darkknightkryta]

^^ you guys are crazy, how would the story worked out if she wasnt in the game

Like I said, just say "Raf bought mercenaries" and there you go.  She didn't need to be in Italy talking to Sully because that part of the game plays the same whether she talks to Sully or not.  She didn't need to fight Drake and Sam since at all parts there's no revelation or anything other than Drake/Sam escaping.  You can argue about Sam firing the gun to kill Nadine, but that cutscene could easily have been rewritten without her.  She didn't need to be slapped, cause you could just say "Raf bought mercenaries" so it didn't matter int he first place.  She didn't need to say that Avery's treasure was metaphorically cursed since you fight Raf over it regardless.  You can take that all out and the story plays the same.  Sam goes to Drake for help.  Drake helps Sam.  Drake kills Raf.  At no point is Nadine necessary.