So? I gather that magical children have the possibility to develop faster than their *normal* couterparts, otherwise Chrono would not have been put in a command position at 12, Yuuno wouldn't have been living alone and going on mission of his own... So holding these "children" responsible under the law isn't as far fetched as it seems. Even then, there were probably quite a lot of extenuating circumstances taken into account, how many terrorists having actively participated to attack are only sentenced to 8 years of prison? Especially when the said prison consists in living with their mother in the countryside?