My sister runs to our parents when ever I say something?

When I try to speak my mind and have a conversation about how we can change our relationship and express how she’s hurt me she won’t respond and just runs and tells my parents everything I told her. Then my mom tells me to stop speaking my mind. Why can’t we have a real conversation between us? Why does she do this? It hurts because I feel coached as if I can not be real with my own sister. I’ve grown to dislike her because our relationship is no longer real because our parents are like referees at this point. What is wrong with her? She try’s to paint me as the bad guy all the time. What is the point in going to our parents about what I say instead of having an adult conversation between us?
My sister runs to our parents when ever I say something?
Post Opinion