Sister gossips about me but won’t confront me?

Me sister talks behind my back but she won’t speak her mind to me or say how she really feels about me. I think she’s really pathetic. What is the point of talking shit about me and can’t confront me? When I ask her what’s her problem she runs to my mom and tells on me lol. What is up with this? By the way she is 10 years older than me.

Sister gossips about me but won’t confront me?
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