Family & Friends

Am I a bad aunt for not wanting to gift my rude niece on her birthday?

My 14 y/o niece is acting towards me and her grandma (68y/o). She always gives us dirty looks. She will command someone without using please like she will say give me water! by the way she is well off and act spoiled my sister gives her everything she wants. She never helps her brother do household chores they dont have maid whenever we are visting them she would just say get me water! If you dont give her immediately she will give you dirty looks. She acts like you are her maid. She doesn't even say sorry when she hit you with something. I told my sister about that so she could fix her behavior and she just laughs and said "just let her" and proceeds to call my niece "My beautiful daughter most beautiful in our town, she will beat the neighbors kids she will be muse in our town" Like my sister is so narcissistic to think that. She doest even know if her daughter will beat the beauty of children of other neighbor when they grew up. by the way my sister (her mother) is a bully and I dont understand why they are still blessed despite my sister being mean to me by calling me dumb everyday maybe her daughter picked that behavior from her by not respecting me. So Im not suprised why the daughter is very mean. And we are poor and she always say we will never even experience eating at a fast food restaurant like she's so mean and thinks they can only eat at a fast food restaurant. Now I have a job and her birthday is coming I dont want to give her gifts and my aunt is encouraging me to give her a gift because I gave her 21th brothers birthday and her mom (my sister) a gift and if I didn't give her a gift that would seem like favoritism. I still dont want to give her a gift because of how she treats me. Im planning not to greet her either and I dont plan to go to her birthday Am I a bad aunt?
Am I a bad aunt for not wanting to gift my rude niece on her birthday?
Post Opinion