Board Thread:General Discussion/@comment-34628708-20180330132303/@comment-35353957-20180513100323

We've already seen how the Emperor and Empress of Ninjago treated her (not letting her out of the palace and getting her into trouble for doing 'undignified' things, 'dishonouring' her family). This combined with the grief and trauma from the loss of her birth parents would have filled her with hatred and vengeance, meaning she had to be deceptive behind their backs (see what I did there?) to plan her revenge.