Welcome RunImmuno96:
I'm sorry about your sister's behavior. I can understand how angry outbursts can disrupt the dynamics in a family
It's good that you are reaching out for advice. Your best approach is to learn various strategies and communication techniques to change the way you interact and react. The Karpman Drama Triangle workshop can help you learn about healthy triangles, versus unhealthy ones. There is a bit of a learning curve involved and some practice. It is always best to avoid argument (and for her to not notice a reaction on your part). Check out the two links below:
AVOIDING CIRCULAR ARGUMENTSbpdfamily.com/message_board/index.php?topic=118892.0;all
KARPMAN DRAMA TRIANGLEhttps://bpdfamily.com/content/karpman-drama-triangleBoundaries can be important for you. They are for the sanity of you and your parents. Your sister will likely overstep them, but they are up to you to enforce. Using Validation can make a difference, as well as various communication skills. Check out the links below (click on the green words or green addresses). There are, also, links to the right of this post, that lead to additional helpful information.
SETTING BOUNDARIES VALIDATIONCOMMUNICATIONS OVERIVEWCheck out some of the links and let us know what you think. It can be helpful to interact with others, as you learn some new skills. There are a lot of helpful people who share their experiences.
Hope you have a better situation in 2017