Okay, nah, this absolutely blows
Yura was the only one keeping MC humble, and now she suddenly "fell in love" with her, even though she loves a different person? Nahhhhhhh
Even if she dislike her, continued doing lewd things will obviously affect her and make her react to her Mistress. The vampire.implied like her more probably closer of her type.
Well, she is a poligamic after all