The Sibling Rivalry Continues

I love my brother and sisters but sometimes they push my buttons. Take my older sister for example. All she does is call my mom and doesnt even ask her how she is doing, she only calls because my brother in law is not around. My sister likes attention and to be the center of it. She doesnt ask how me and my other sister are doing or even talk to us. My older sister has a best friend from Texas and they have known each other since they were kids. I feel like she cares more about her than me and my sister. My older sister would do anything to go see her friend but she wont with us. Four years ago my sister came out to visit us and she didnt spend time with me and my sister, she went out and "partied". So i'm not sure if i even want to visit her or for her to visit because that is what she will do. I'm so angry at her right now. My sister and nephew are suppose to come for christmas and as much as i wanna get to know my nephew and i love him already, i will not watch him so she will go out to a bar and act like a teenager. Thats not what an aunt is for in my eyes, now if she had to work or something like that than yes but for stupid reasons no. My sister hasnt been there for me, so as if right now i dont owe her anything. Ugh! this is making me upset , i dont want to argue with any of my siblings.