As someone said in either this thread or another, anything that gets big enough and lasts long enough inevitably turns into a paypig bacon harvesting operation with the absolute bare minimum (or even sub-minimum) development. For something like this which doesn't need new art and is also relatively easy to code (in terms of adding story content) there's not really much excuse. There's the Elena's Boyfriend idea that seems like it would have been around since basically the conception of the game, with multiple characters hinting you should get with her, yet for some reason all she has is a single drunk bar scene.
Venefica has a ton of fun small interactions though. Sadly it never actually feels very intimate with Ven? It either feels like a business transaction or horny. No middleground.
I feel like,
eventually, (emphasis definitely on
eventually,) Venefica will have something more like a proper romance. The fact that the only one of her candies that is supposedly effective on her is the 'lovey dovey romance' one is, I think, quite telling. Elly even notes it as being a bit odd that one works but none of the others do. So the natural conclusion is she's either acting or she's consciously or subconsciously made herself vulnerable to its effects. Combined with her little cute aspects and how she acts like an overexcited young girl sometimes, and also gets genuinely embarassed by it, I reckon it's somewhat obvious that she
wants romance. She's especially ticked off at the elves treating them like love potions, too. Which yeah, disrespcting her work and all, but I think there's a little more. What specifically it is that is holding her back, who knows. Could be her own wildness when she gets into something and no one can handle it, could be that she feels no one is worthy, could even be that she's just straight up a shirking violet and is too embarassed. There's the petplay fetish of course and she is naturally pretty dommy but ultimately I also reckon she's got fairy tale princess fantasies rocking about somewhere in there, just need to draw them out. (Well not literally princess stuff but some witchy equivalent.) When the player can in-universe be considered to have somewhat comparable power rather than a superboss spar that's sort of semi-canon (probably after the fourth guardian which... Lol we're never getting there anyway) I think you'll be able to sweep her off her feet.
That being said it's all just conjecture, and it may have just been accidental or throwaway lines, but the pieces hinting at and justifying a more intimate romance do exist within what is in the game when taken at face value. Whether or not they actually intend to ever write it? Who knows.