Am a fraternal twin and my mother always has high expectations of me in any holidays. Mother's day is tomorrow and am too darn busy with work and studying to do all the things she ask of me, but my sister has nothing to do, but to be on her phone all day. She does absolutely nothing and isn't bothered. Every damn holiday has to be me making arrangements, buying things, setting up decorations and cooking for the entire family, while my narcissistic sister just sits back, relax, and acts entitled. It pisses me off. If I argue with her, she pulls out her annoying tongue at me and my mom is always taking her side in a senseless way. When my mom had to be in the hospital, I drove her there, missed my work and stayed overnight, but my sister didn't even want to see her and could care less. The hospital staffs were telling her "you got a really good son there", and I was able to get a letter that excuses my absence at work. but she holds me at such a high standard compared to my sister and attacks me for her. Am honestly thinking of moving out. If you were in my situation, what would you have done?