It's the nice, sweet, quiet ones that never argue that you should be afraid of. -- Anon Guest
They thought the Human was docile. Quiet and apologetic, they assumed that they had been 'trained'. The Human certainly acted that way. Always eager to please. Always nice to the point of being excruciating. They thought that Human Zie would never be violent.
They were wrong.
The thing about Humans is - even the soppiest milquetoast has their line in the sand. The point at which no more shit will be tolerated. At that point... all bets are off. For Human Zie, that point was seeing an abusive guardian in one of the Edge Territory markets. Needless to say it was more than a shock for her Thufei crew to see hir charge at another Human and lay them flat with one punch.