My sister with racist views

How can I (30F) confront my sister (44F) about her racist behavior, especially when she can also be quite bullying and has emotionally abused me in the past? To give you some background, I’m Indian and have been in a secret relationship with my black partner for nine years. I want to share this part of my life with my family, but I always hesitate because of her openly racist remarks and the potential fallout—such as being disowned, having intense arguments, or facing emotional abuse where she insults me and calls me hurtful names like "slag" and "embarrassment to the family." I feel embarrassed and uncomfortable around my family because of this, and it’s really distressing.