I kinda envisaged Pluto as being a precocious kid who's suddenly gained all the power (i.e. become the CEO of a major corporation) but hasn't lost that simplistic world view (I guess living in a dark room beneath the Loom of Fate does little to broaden a person's world view) and Petal is at the same time, advisor, lackey and big brother (never a parent). She's running her thing her way, the simple way, while he's been steeped in Yu-Shan's mazy political system to know things aren't supposed to be done the way she does things. Also, he knows better Kung-Fu than she does.
Captain Hesperus
Captain Hesperus