cute but vicious...

something that appears very cute is my sister, but she is very vicious on the inside. her mind is like a ticking bomb, just waiting to explode. she is made to lie about anything, no matter what the consequence, and she is wired to do everything bad, and blame me for it. She screams like a madman, even in public, and it is embarrassing for my whole family, especially my parents. But we love her just the same.