How to describe a girl who loves to play but is measured?

Can be used to describe a girl who loves to play but is measured. This adjective can accurately express the playful character of girls, but at the same time, it has appropriate limits, and it will not overindulge itself and can control its words and deeds. The word "affordable" means that she likes to try new things, dares to challenge herself and is not afraid of failure. Secondly, the word "watch" means that she has self-control, will not indulge herself, and can control her words and deeds. This description not only shows her personality charm, but also is decent and elegant.