I wish my cousin didn't have her kid
Why do you wish that your cousin didn't have her kid?
The kid is very annoying
Your cousin's child is your family and you should make the appropriate efforts to get along with her. You are not being understanding towards children. If your cousin finds out how you feel, she will not want to be around you.
The kid is the most annoying person in my life. I always feel like I'm babysitting her.
Even if she is annoying, she is family. I'm sure that she will become more mature as she gets older.