How could I make this character look more unsettling?

She's meant to be a fusion of all three character designs. Or, well, she's the two bottom characters I just couldn't decide on her hair so I used it as reference, but her face morphs to look like the ginger. Its for a scene where the mc of the game has a panic attack when she sneaks up on him and he sees her face as being warped to be a mix of her own face and the ginger dudes face, since the ginger dude is a ghost that he was trying to talk to. The ghost is meant to have a big smile almost all the time since he's obsessed with the mc. Like stalker level obsessed.