What is wrong with Barbie?

Yesterday, was a half day of school and Surenna(11) played Barbie with her younger sisters.

Her mom: "Surenna, you had so much fun, why don't you play with Barbie more often?"

Surenna: "I don't like that optimistic expression she (Barbie) has on her face."

My wife was very pleased by this: Nothing pleases a misanthrope, like seeing it in others.

What?