Me: "Rachel, will you go throw this away?"
Rachel: "Sure! Of course! No problem!"
Me: "Rachel, be sure to clean your place off at the table."
Rachel: "Sure! Of course! No problem!"
Me: "Rachel, if you don't go to bed right now, I'll have to lock my (bedroom) door."
Rachel: instant tears "Pleeeease, don't lock you door." (not a typo)
Oh, well. I guess she would be perfect otherwise and vanish in the twinkling of an eye.