Oh, yeah, I should offload these memes.
I don't think it's instinctual. I think it's very trained, and the way she approaches social interaction is actually very strange. If Serra is autistic (no social skills), then Morgan is autistic (too much social skills). She's autistic about social interaction. She wants to "win" at it. You can feel a history of practicing in the mirror for weeks if not years. Neurotypical people don't act the way Morgan does. She's masking. Hard. All the time.
so there are two hot and cunning red-hair murderers who are very autistic about humans and social interactions (talking about makima from CSM, take it with a grain of salt i've never read the actual manga nor watched the anime)
So when I was playing through of the Devil Episode 1, I noticed that Serra's eyes kept turning red when viewed through the phone screen. Which I thought was interesting, but perhaps not all that significant, just a quirk in the art. Until I noticed it wasn't just through the phone.
Her eyes are absolutely glowing red for evil here, despite just being blurred. And a bright red. Just like Morgan's.
And it's just so fascinating. Because if Serra was just an android, she would be incapable of evil. But she's not just an android. She can choose to be good or bad. And when you stop focusing on your assumptions about her (such as by redirecting your attention), you can see that. She's a person, and a person is capable of evil.
OH also you dont have to publish this once again but 1. THE SOUND DESIGN IS SO SATISFYING… and 2. i actually got into of the devil by a fanart commission of morgan and i liked her design and the demo was free so i went “ok fine whats up with this character” and ough. so. yippee?
You heard it here first folks: commission your favs to draw lots of Morgan if you wanna spread the good Word of the Devil!
...But to address your point, most of the sound design, specifically in the UI, incorporates gun trigger, reloads, and clicks to give the UI a unified sound language and also to subtly put you into Morgan's headspace.
A spoiler warning for "of the Devil", chapter 1. Usually in games like Ace Attorney and other murder mystery novels, when murder happens you just kind of... Don't care about the victim. Yeah, that person died, but okay, Whatever, time to catch the baddie and show the world how evil they are. Not in this game. In Chapter 1, the player has no idea who David Ashur is. Morgan, the protagonist, is a long-time friend of this guy. Surprisingly, someone who she cared for. And, given who Morgan is, it's weird to see her care for someone in that way. She may hide it, but the attentive reader will see it. And that's the initial interest. You know how in Danganronpa players tend to Hope for their favourite character's survival? How absolutely shocking it is to discover a corpse of that character? You cared for them, and now they're gone. The story ends. You probably won't see anyone mention them again. I have never seen an author make me care- posthumously -for a character that never even had an actual live dialogue with someone else. All the player sees is the stories about the Great David Ashur, stories from his colleagues, from his partner, from his daughter, and from himself. By the time you get to the third act of the first episode, you know so many things about him that you can't believe this guy actually died. You get the feels. A man is dead, and you start crying about it ten hours later.