What if Tara really was part demon? Or something else that's equally weird?

“But I didn’t mean to wish him away!” Nie Huaisang cried out. “That’s really too bad,” the goblin king said, looking pleasant and humble and charming the way he always did, even in his cape of glittering gold and high-browed hat. “I wish there was something I could do for you, but the rules are the rules. You wished him away, and I took him.” Nie Huaisang wrung his hands. “You don’t understand, the last thing I said to him was that I hated him! Meng Yao, please!” “It’s Jin Guangyao,” the goblin king corrected. His smile looked a bit strained. “Listen, do you think I’m happy about this? He’s my sworn brother! I’m only doing what I have to –” “Oh, save it for Lan Xichen,” Nie Huaisang growled. “Show me the labyrinth already.” “You’re going to face the labyrinth,” the goblin king said. His voice was very polite, and yet still expressed significant doubt. “You.”