I’m sick of everything

I never did this or talk about my life online for advice but this is my last straw. Today it was my first time ever talking about the abuse I received by my parents throughout my life with my sister. I needed to express everything I contained in myself all these years since I had absolutely nobody to listen to me. When I explained to her the terror, the abuse, the trauma, the suicide attempt I made she looked at me and she said that I am absolutely ungrateful, that the fact I’m still able to live under their care should stop me from complaining, the abuse was justified since I was and am a “bad kid” .I just opened up myself for the first time and this is what I got. I just don’t know what to do. I just lost any hope of recovery since my own sister just took side with my parents while witnessing my struggles. Please I need help.