my elder sister makes everything about herself. Comes and go, both physically present and talking to us, as she pleases.

My elder sister (27), who has anger issues , and i am NOT wrong to say narcissist, just cares about boasting about her achievements, making every topic about herself, lying even to make her the centre of attraction and very smartly belittle me (23 F)in conversation and my position in family.
Whenever she's away, my mother is all dependent on me, given my parents aren't on good terms living together, so she is all I have to talk to, eat with, and share things with. Mind you every time my sister is back she all of a sudden forgets the fights, verbal and physical abuse my sister did to me. She suddenly becomes the favorite daughter who fixed it all, the family, being the man of the house, etc, etc.

I dont wanna sound selfish and hateful, but i am doing everything financially, supporting emotionally, since college 20 yrs, what my sister started after 25. Her first job was also years after graduating, and i have been earning since my college years. Full time. But every time my sister is back, she smartly manages to glorify her achivements, academics (I was the better one in studies, shes average and theres nothing wrong but she has made evryone believe how she has always been better than me, and i carried onto her footsteps. Her job is everything about her, she sits with us and just TALKS ABOUT HERSELF. How everyone has crush on her in office, shes all people like, compliments, etc ,. I am sick of it. I know this is all fake. I just know as a sibling when she is lying or faking her talks. I feel sad too like why do you have to say it all? Just spend time with us.

Howver, this attitude of hers, has made my image utterly embarrasing, my work is not as nice as hers. My mom talks to relatives how her older daughter is successful and i will be too one day? She advices me to take on a serious job (i wfh) and how your sister is making us proud.

My sister knowingly talks in a way which will eventually lead to our comparison? I am starting to getting more distant from her, and she calls this too how I am alwys irritated whenever family sits together? And how I start with these bad faces again! I am so done with her. I hope i find my mental peace again.