There are certain other sub-cultures and lifestyles, which are close to or allied with dark-gothic subculture.
Goths tend to appreciate the sharp contrast of black and white, and to this end will often wear light colored makeup with dark accents on the lips and eyes.
If it won't be allowed on TikTok, it won't be allowed here.
Exactly how it contrasts Comparing TikTok with various other digital media platforms reveals what makes it special.
In this case, you might earn admiration in her eyes for not being goth.
A better understanding of the subculture will help you to be respectful of her beliefs.