Say NO to everthing she don't want

Mei Mei recently likes to say "NO NO" to the things that she don't like. I know that is time she's going to give me hard time!!

Ask her to sit down, she says no no no..
Ask her go to change, she says no no no..

Very naughty now, but she deny it. When we ask her who's naughty.. the answer we get is never herself one. No matter how's the question is,

Jie Jie naughty or Mei Mei naughty? -- Jie Jie
Mei Mei naughty or Papa naughty? -- Papa
Mei Mei naughty or Mei Mei naughty? -- Papa