Scherezade deWinter
The Blood Hound
Welcome to a new corner of Get to Know the Characters a Lil' Better!
Niysha is just a really bad Sith. She's not a Jedi in denial, even if she basically exclusively hangs out with Jedi.
As for whether or not she believes it, that's a little more complicated. She identifies as Sith, but her definition of that word is almost exclusively non-secular. If you were to ask her why she doesn't hang out on Kaas or Jutrand, she'd very quickly reply something like "Are you crazy? There are Sith there!"
...So I guess put her under "thoroughly delulu" on the chart.