Gonna have to agree that I don't really dig this issue while still being open to whatever she'll bring.
I guess it's because there's less of Belle in and of herself and more of setting up her place in the world, in contrast to the other characters primarily being about selling either themselves or their connection to another character we're familiar with. Not to mention that most of them were introduced in an eye catching way, established a memorable mood, and then we're given time to stew until their next appearance--even Tangle was ultimately some nobody with an odd physical trait; meanwhile, Belle is just kinda around when Sonic & Tails visit where she was and immediately stuck around as something to have be around continually without the gravitas or surprise factor Starline had, since she was already shown off beforehand like Tangle and I think Whisper(who is better than both of them, mind) were.
Her design/color scheme may also contribute to this, as her clown nose stands out way more than even Sonic & Antoine's bean noses on her facial structure and its pink color has this weird effect of throwing off whatever balance her orange hair may have had on her green clothing. It's worth noting that she is explicitly kinda sketchy now rather than being an obvious doe held under fruitless suspicion, as she's noting that she has to be careful not to make anyone ask more questions. Which make it seem less like an ambiguous case of denjal and more like she has something to hide.
Yeah, I'm really questioning why it would even be there.
I guess I see something, but I think that's more a product of Gold not getting a chance to really go anywhere beyond what we know of her background and what was said after the fact.
I could go for a Knuckles story about now, yes.
Not really? I mean Sonic was quick to assume she was a Badnik in a darker space, so it makes sense that the still recovering resistance would take notice.
As for everyone else, though, not really seeing it: Amy and Jewel wanted to get back to touching base with Sonic and Tails in the command room, Lanolin seemed more bothered at the two girls being adverse about Belle especially when she can hear them, and the Orangutan guy(who's even hippy like) seemed chill n down with her regardless. He only got upset she she nearly got crushed and made it clear that he's just as worried for her safety alongside everyone else's, especially when Tangle apparently mucked up worse in one incident.
But yeah, the chance of an Untwist is pretty strong