The fact that some people are willing to part with that kind of cash for childish scribble doesn't change the fact that it is still childish scribble. If people want to part with their money, that's their free choice.
I am just not going to be impressed with adults drawing childish scribble, no matter how much it is going for on the open market.
A pity. Such a talented little girl, easily doing what adults pay millions for, and you refuse to do more than stick it to the fridge door for a couple days, belittling it as “childish”. Poor kid, life could be so easy for her...