Opposite Natalie Ref Sheet

I promised a description of Opposite Natalie, so I shall start.
Name: Opposite Natalie
Gender: Female
Species: Spirit Demon
Age: None
Likes: Blood, lust, killing, basically the general evil stuff
Dislikes: Anything upbeat and happy
History: Opposite Natalie, like the name implies, is the opposite of Natalie. She is a spirit demon, the one's evil side that's kept inside. She was never technically "born" therefore no age. Since Natalie's blood was tainted due to the evil scientists, it gave an opening to her spirit demon. The collar that was stuck on Natalie originally disappeared one day. The reason was her spirit demon took it and now keeps it. Once Natalie's right body was completely tainted of the experiment, it could be easily taken over by the opposite her within. Now whenever her right eye sheds a tear first, it shows a sign of weakness to the demon. With this signal, Opposite Natalie can quickly, without struggle, take over the body. Usually to prevent the real Natalie to escape, she takes over with the collar or necklace ALWAYS on her. It was an ordinary collar/necklace until Opposite Natalie took it and made it a literal imprisonment for her good spirit. Fortunately (for the good guys) she never has full power of the body, there is always a weak spot whenever she shifts; the wings. Her left wing is black while the right wing is white. If anything that dislikes Opposite Natalie affects her, the more powerful Natalie gets and has a better chance of breaking free. When both wings turn white, Opposite Natalie is once more gone and goes back in Natalie. But it is unknown when both wings go black, for it has never happened. But Natalie and her friends fear that it means that they'll never see her again as her opposite is powerful. There are 3 in between shades before it turns the wings into both shades; light, medium, and dark grey. The only exception is if Natalie's ever in Halloween Town, making it impossible to tell if she's good or evil
TL;DR Opposite Natalie's a spirit demon inside Natalie. Both wings black, unknown, white, good again.

I was on YouRepeat with a song while drawing this. I'll check again on Friday and see if anyone can get it
Hint: Weather
Edit: Okiee... since no one guessed on this, I'll still tell y'all...

45 minutes of listening to Winter Wrap Up XD Imagine, drawing something like this while hearing "Winter wrap up winter wrap uuuppppp~"