I have been wondering: Which Chaos God has claim over Anisa's soul the most? We can rule out Khorne as she has neither courage nor strength (apart from simping for Hasan and his support for terrorism). Tzeentch fits a bit more as she is a schemer but she is so bad at it that she should count as his anathema. She also does not try to acquire knowledge on the subjects she researches which is a big no-no for him.
For me it is between Slaanesh and Nurgle. She identifies as a succubus, was a titty streamer, is an OF model, thinks she is pretty and seductive, does constant modifications and she thinks she cooks well. All these point to Slaaneshi corruption. On the other hand, she is horrible at seduction, she does not try to excel, she does not seem to enjoy sex considering she uglied Ian up and made him smell repulsively.
Then we have Nurgle. She smells horribly, she makes others smell bad too, rots her brain and that of others, stagnates in her content and never strives to improve. Then again, she does not spread rot beyond her immediate vicinity, tries to look pretty (even if she fails) and is ashamed of her body.
Both Slaanesh and Nurgle have good claim over her but I am not sure which she leans more towards.