i had a question about kit - by the end of qoaad it seems like he's less resentful of ty and his choices/doesn't blame him and is more embarrassed about how he felt like he was important to ty and almost blames himself for it too, but as time has passed it seems like that anger has returned? i was wondering if that means his resentment was repressed in qoaad and has grown over time as he's processed the situation more and pinpointed exactly what has hurt him (as much as he can while avoiding it at the same time 😭) or if he's redirecting some of his insecurity and hurt into anger as a way to avoid fully coming to terms with it 🙇♀️ unless this is directly dealt with in tlkof!! (very very excited for it omgjskdks)
Keep in mind Kit isn't just mad at Ty — they are mad at each other! That said, I don't think Kit is ever really "over it" at the end of Queen of Air and Darkness. He's just in a different emotional place than he was earlier in the book.
What might look like "being less resentful" is in part resignation. Kit is to some extent resigned at the end of QoAaD; he leaves believing that's probably the end of his and Ty's story. He'll miss Ty, eventually he'll stop missing him so much, and life will move on.
The problem is... it doesn't.
His feelings for Ty don't get smaller. They don't fade into the background the way he imagined they would. So the hurt doesn't disappear either. If anything, there's something especially painful about realizing that time isn't fixing what you thought time would fix, and that doesn't make Kit less angry in the end, it makes him more angry.
So I wouldn't say Kit's anger disappeared and then came back. I'd say the hurt never really went away. As he realizes that Ty still matters to him just as much as he always did, it's only natural that some of those feelings would, as you said, "redirect some of his insecurity and hurt into anger." Love and anger are often much closer together than we'd like to admit, given that they are both intense feelings. If he'd forgiven and forgotten Ty there wouldn't be much coming back from that — he'd just be indifferent to him.
And it's not that he's just mad about being hurt. He's mad because what Ty did put Ty in terrible danger, Kit was warned about that, and he's furious that Ty didn't care about his own life as much as Kit did. I'll give you a little of what Kit thinks himself in TWP:
"That mix of hurt, fear for Ty, and anger that Kit had felt by the lake years ago had never totally faded from memory. Kit had been hurt since. Angry since. Sometimes angry and hurt at the same time, sometimes even with Jem and Tessa. He knew that breaking feeling of believing the people you loved most in the world had let you down, even in small ways, even with misunderstandings. Kit had come to Jem and Tessa a little broken, and even if they had done what they could to help put him back together, some of the sharp edges where the breaks had happened could still be weapons. And sometimes Kit had used them."
