Wah after re-read it makes sense why Edward only hate Kate for late showing up her soot power and not John...
apart from her unwillingness to show soot in the first place. It seems like she did her self well
hiding the data about her prior the debut and probably not immadiately threw her soot trash to the garbage so the staff wont know if she might blooming like John
, plus Edward's grudge about misjudging who is the sacrifice..
After chap 60+ I'm wondering if she
has a hidden book left by someone in her room and motivating her to hide her information, plus she knows too much about Shadow's house even left Shaun wondering about it