Maintaing relation

Assalam o alaikum. I have an elder sister and her behaviour is extremely rude towards me despite the best of my efforts. The thing usually starts when I request her to talk in a slow voice and modest manner because the neighbours can hear her. But, she never cares what I say and then starts using bad words. A few days ago, she even said that I can swear upon this that I extremely hate you. She also said that I only use you when I want to get some favour from you. Apart from this, you're nothing for me. Till date, I have tried my best to keep my relation intact with her but I can't bear now. This has become a daily routine. I have decided to stop talking with her so that she can realize. Kindly guide on this matter