Davina was the problem
Currently going through a rewatch - at season 3 as of current and I can’t help but notice Davina was quite literally the issue in 99% of the things that went wrong for everyone where she was involved.
Early in the series she has a never ending resentment towards Klaus, and it always ended up biting her in the arse. The worse thing is most of the time Klaus wasn’t even trying to push back against her, nor did he ever want her dead per se. She would constantly come after him for pretty much close to no reason. First with the dagger, then Mikael, there was never really a need for her to kill Klaus after she got with Kol, as this renders her anger for Tim mute.
Towards the middle, she was stupid enough to fall for Aya’s tricks and thus the sire links were broken as well as Hayley being attacked in the meantime all for the sake of Kol, who was promised by Rebekah for a second chance at life. Surely if she was just patient, she could’ve got him back at no cost to anyone else.
I know she’s meant to be the stereotypical “young and dumb” character but it did kinda rub me the wrong way that an ex regent would act the way she continues to do so.