In a visual novel my friend and I are writing, I created a female character who is obsessed with making furniture out of (living) people. Yeah, it's weird, but everyone in the story has their quirks. In the story, a bunch of social pariahs are trapped together in a hotel. She's one of the characters, but isn't a main character. She, along with the other non-main characters, all are supposed to seem a little off-kilter, so that it's reasonable to think they just snapped and murdered someone.
This woman says things in an odd, sometimes sexual, way especially if it's furniture related. If offered a seat, she'd say something along the lines of "I disapprove of seats that aren't quivering with anticipation beneath me," or something like that (and then she forces someone into "becoming a chair"). She also doesn't notice people's faces first, instead noting some other part of them that's good for furniture. She refers to everyone in the story as "it" or "that [furniture item]" and talks about regular furniture items in a similar way (so she confuses some of the other characters when she talks to them). She also berates the characters who "aren't beautiful" for being "defects" and doesn't address them as furniture but "materials," "kindling," or something similar. But her furniture fetish isn't sexual (as in she's not getting any sort of sexual pleasure out of making people into furniture), just an oddity that she has.
Despite this, she's one of the more intelligent characters and so she has a lot of dialogue in the story. The problem is that my friend and I disagree on how prominent this feature of hers should be. I don't think she should constantly be saying things in that way, especially since her furniture fetish doesn't come into play much even if the others are talking to her. The way I write her, it's not very prominent at all (and not very sexual, normally). But my friend seems to like the idea of her being completely and totally obsessed with furniture and plays up the sexual aspect.
For example, I'd have her (Alice is her name) say (after being accused of killing another character):
"Ah, I see. Indeed, it is true. I have no patience for unruly furniture or defective materials. But I hardly see why I would destroy something that doesn't drip with the pleasure of doing my bidding." She takes a drag from her cigarette, staring at me. I'm unsure if I should move or not-- Alice sometimes gets weird when she talks...like this. She blows out a stream of smoke and sighs. "You see, footstool, I cherish my furniture whether or not it is misbehaving. And misbehavior is nothing that a good upholstering won't fix. For example, you would be a better footstool if you rid yourself of those itchy fabrics... but I'd settle for you changing the fabric every day. I'd probably fix you all the same, though. A good footstool should give foot massages."
But my friend would make it extremely sexual on top of already being about furniture.
Ah, I see. Indeed, it is true. I have no patience for unruly furniture or defective materials. But I hardly see why I would destroy something that doesn't drip with the pleasure of doing my bidding. I do rather like the smell of sweating leathers..." She takes a drag from her cigarette, staring at me. I'm unsure if I should move or not, she... could be thinking weird things about me again. She blows out a stream of smoke and sighs. "You see, footstool, I cherish my furniture whether or not it is misbehaving. That is nothing that a good upholstering won't fix. A couple minutes with my tools and I'm sure any furniture would be begging to do as I say. In your case, footstool, I'd need to teach you proper etiquette. You don't prostrate yourself immediately when I enter, you never give me foot massages... It's almost as though I need to install some sort of vibrator to get what I want. Ah, yes, I rather like that. A vibrating mechanism would make you rather twitchy, wouldn't it? Perhaps then you could give me foot massages."
Ugh... I can't write how my friend does. Well, you get what I mean, right? She really elaborates when it comes to something that could be considered even slightly sexual. She'll even have the character derail conversations to talk about some sexual aspect of people becoming furniture. That does make her seem odd, though. On the other hand, if every now and then she says something sexual about furniture, that could also make her seem off, especially considering just how smart she is.
I'm trying to determine what would make her seem more off. Should we highlight the sexual way she talks about furniture and make it prominent in the way she talks? Or should we downplay it and make her say one-off comments?