I don't like my newborn(2weeks) niece
Why don't you like your newborn niece?
She's too cute and I can't stand her smile
It seems that you should love her because she's so cute. Families that don't have love and support will fall apart.
I hate family gatherings. Cousins are annoying.
It's normal to have family members that you do not get along with. However, you should do your best to attend family gatherings and be supportive of family members.