Is it just me or she looks like a 11-12 years old kid from time to time? (￣∇￣")

I think it is she even called that the body of a kid so maybe she is around that age (●￣(ｴ)￣●)

I think it's because she has a relatively large head. I can't help to think she's supposed to be a kid since that is typical in a chibi style.