If three of these characters don’t realize that, Dazzler is really Mystique then they have lost A LOT of ability.
Rachel should be able to tell via telepathy
Wolverine AND Beast know what Alison smells like (intimately) so they should be able to figure it out.
Of course they won’t, but hey who says PIS doesn’t exist?
But, but, but - and you know I’m loathe to defend this mess - but, but, but…
Why would Rachel even be playing around in Dazztique’s mind? They’re not close, so unless prompted by Storm asking something akin to “Alison, the hell?!” I dunno. I could see Betsy dipping in to covertly ask Ali what’s up and sensing something wrong, or noting how she can’t get in because Mystique sometimes experiences immunity to telepathy and wears a device and my head hurts.
And can’t Mystique mask her scent? I mean, seems like she’d be discovered by one of those scent sniffers every time she morphed and wouldn’t chance being around ‘em.
Also, I apologize for using logic where clearly none has been implemented yet. And what’s PIS?