My sister always had a bad relationship with our mother, so they rarely called each other. However, my relationship with my mother remains good, and we usually call each other. When I visited my sister's house, I received a call from my mother. After I called my mother, my sister suddenly accused me with the words "what are you complaining about to mother that makes you hate me?" I was shocked and rejected her accusation. I never said anything bad about her to our mother, but she still doesn't believe it, she brings up every trivial thing and makes it a big problem. I then tried to be a big person and asked what made her think I was accusing her, "Mom always calls you, in case you complain about bad things about me to her, she also always asks how you are, but not about how I am" I know my sister is jealous of my mother's treatment of me, but I don't know what to do, if I try to unite them, my sister will respond "why does mother care? Is she pretending?".

I also often feel the dilemma of visiting my sister's house, she thinks I rarely visit her because I don't have money, even though the reason I never visit her is because every time I visit her, I always end up crying because she snaps or gets angry over trivial things. I once didn't visit her for a month because I was afraid of being shouted at, but when I visited her after 1 month, she scolded me "why are you here? You only come if you want something" I came because tomorrow is her birthday ...

I don't know what to do, at this point I feel always in the wrong position...