About quiet mgs5

Before I start my account must be new or something so I can’t post in the actual metal gear place

So ages ago I decided to kill quiet in mission 11 since I really didn’t think she was a big part of the game, turns out she kinda is so I went back and spared her, I just beat mission 31 and then the credits rolled, I know there are more missions relating to the story after and quiet appears in them, am I able to just watch all of quiets cutscenes on YouTube and then continue on after mission 31 to see her normally in cutscenes? Or do I need to replay every mission she’s in to get her in these cutscenes