What if I hate my niece?
That's not good. Why do you hate your niece?
She's a loud child, and I hate loud kids.
It is wrong to hate family members, especially young family members. Instead, you should get closer to your niece.
Maybe she can learn to be quiet. I'm just not into loud kids.
Maybe, you should try quiet activities and it will help. But really in the future, do not hate people outright, give them a chance, you might like them.