"So, now that Midnight has broken records when it comes to how fast dragons can grow, do we need to start teaching her other things?" Walker was very worried that some of the younger dragons would start to take notice of Midnight. As her older brother, he was ready to beat those dragons down in to paste.
'Walker, the next time you think of those things, remember that Midnight would literally shred anyone that dared to insult her or act poorly. She has a lot of good role models." Su's words were very clear that if Walker continued to pursue these thoughts, she would take it as an insult and reason to scold him.
Naturally, Su was also thinking that she would keep things on track. She was Midnight's draconic guardian. A true draconic guardian would not allow anything untoward to happen to the dragon that they guarded. Especially someone like Midnight who was pure and innocent.