I'm sorry but I find her annoying. Why? Bruh she's NOT legally his daughter. And if she's "the niece" still you have no rights to get angry for you "uncle's" relationship with other women! She needs to stop being obsessed with the MC and free him from interacting with women. You're in HIS house for his fatherly support not for you to interfere with everything he does.
What are you a fcking psycho bxtch?! So annoying! 😒