You'd prefer we ask if it's theoretically possible for a Narakhan to develop and use a Knight power? Whether the demeanor we saw in Violet is her usual attitude or just when she's "on the clock"? Whether the Knights and/or Crests are going to acknowledge and/or mourn for the cell we saw get destroyed? Whether there's theoretically any way (deed or metaphysical) for a Narakhan to lose their definitive markings? Whether humans are aware of the Narakhan at all either as threats or folklore? Whether there are any outreach programs to try to build bridges between Narakhan and other Primes?
Narakhan developing a Clan power? Yes! As a matter of fact...well...stay tuned...that is going to be answered more dramatically in the comic itself.
Violet's attitude? Well, that is something up to interpretation. After all, as a cell that is right near Grace, Violet sees many more Acolytes than most others. And the brain, Prime or human, loves to find patterns, so it is something of both.
The lost cell in Prism? Yes. Very much so, again, stay tuned. That is part of the immediate future.
Can a Narakhan lose the markings? While in the most practical sense, a Narakhan can paint over the marks, ala Angel's painting/tattoos, that is a superficial change. The marks would still be there, just covered in a layer of paint that hopefully matches the original fur. Once it grows out, or gets washed away, the marks are there just as before. Now if they can be removed via something more metaphysical...that is a more difficult issue. If something like that has happened, it would be due to something approaching divine intervention levels of force. It would not be meditated away. Nor, as I should note here, would even good-minded Narakhans necessarily flock to it, after all, it is part of who they are, and few would be aching to just scrub it out.
Humans awareness of Narakhans? Kind of. To most humans and human media, the distinctions between Prime and Narakhan are pretty shallow, boiling down to "oh there are some Primes with black markings", and that is where it mostly ends for the majority. However, study into such things brings more knowledge. But no, it is not necessarily a widely known divide.
Outreach to Narakhans? Yes! Actually, that is something I'm hoping to address within the next "chapter" of Knighthood or two. One thing to keep in mind that, in the grand scope of things, Narakhans like Ayah, who are fully invested in Chaos and the demonic side of the mythology are very rare. She is the fringe element where the majority are just getting by day to day. Like any division of class in society, especially one with a huge amount of distrust and mythology around it, outreach is a difficult process. The Prime government is doing a lot to help elevate Narakhans to a better level of living, but progress is a slow thing, especially when every now and then the more malevolent Narakhans do something truly atrocious, ala the cell attack.