I hate my husband's sister

I hate my sisterhusband . She is 10 years older than him and always behaves like the smartest one. She constantly tries to show her superiority to me, although she is nothing of herself, all at the expense of her husband. He lives for his own pleasure, having nothing of his own at 30 years old, doing manicures, no children.

This person greatly irritates me in absolutely every aspect, even just her speech. Whenmy husband communicates with her, I understand that this is fundamentally wrong on my part, but I’m starting to get angry.

To imagine that she will be at all family joint holidays is akin to hell for me. And when she starts giving my husband hersadvice and getting into his work without understanding anything about it just cringes me.

How to hold on and not kick her out.