Snitching, ratting people out, telling, all also known as backstabbing

Yeah, ive been having this problem with my sister lately, she tells my parents everythign that i tell her in her quest to win favor and get me in trouble. She has no respect at all for my life. My moms ays it's because she's not at the stage of her life yet where she has to worry about "snitching". So im thinking... she just has to wait... becuase if she's going to treat people like this then she's not going to have friends for long first fo all, and second of all, it's going to happen to her.
Just because someone is doing something wrong doesnt mean you turn them in. If they're trusting you, you keep it to yourself. Let people deal with thier own lives you know. You don't need to be thier captain safety. If they tell you and you see soemthign wrong, deal with it with them first. (unless they're like seriously suicidal or have an eating disorder or are cutting themselves or something... then they need help. but i think drugs and such fall into the confidential category) if they still don't change, then they have to learn tha hard way. You dont need to mess up thier lives more by telling people, just to get them in trouble. Its just... its so immature. Someday youre going to have stuff you don't want people to say anything about, and if youve told thier stuff, theyll tell yours. its as simple as that. If someone trusts you enough to throw thier dirt into your yard, keep it there. Dont spread it around, or they'll put up electris fence, and barbed wire, and you can forget about getting any trust fron them again.
Just had to vent a little before... who knows.

Love~
Monika =)