I'm not sold on the new Leona

As a Rakkorian Warrior and as a Celestial, Leona is shown as someone who does what her gut tells her is right above what is expected of her - meaning her moral compass is above her duty, which is the same as her old lore. But her new lore has a section in middle where Leona seems to be having a mid-life crisis (i.e. when she's a Solari) and it feels really out of character to me. When confronted by the excitable and seemingly peaceful Diana - who came before the court as a literal god-incarnate - Leona was practically foaming at the mouth over the prospect of getting to kill her. Where did this sudden blind obedience for the Solari come from? Being indoctrinated seems so out of Leona's character, to me, particularly since the story gave no impression that the Solari was intentionally doing this (Leona literally educated herself).

Solutions to this, for me, would be to either give some impression that Leona was a Solari-at-heart BEFORE they recruited her - perhaps seeing the Golden Man as an aspect of the Sun and it was her belief that the Sun's light is pure that stopped her killing it; or for Leona to show signs of remorse or hesitation over the fact she believes she'll be Diana's executioner. For example, "Leona knew how the elders would react before Diana even opened her mouth; steeling herself at the prospect of being ordered to attack an emissary of the Mountain, who entered the court in good faith. But to worship False Light... Diana was wasting her breath here. Suddenly Diana struck out..." Like, it's fine for Leona to be overcome with shock or grief, or even outrage so long as the outrage is over senseless murder (rather than someone speaking with different beliefs).

Don't get me wrong, I love fictions where The Sun is the villain. Something so big and important is just ripe for a vain and arrogant character, that blinds and burns out of malice... but Leona isn't that character. To me always seemed like the character who would oppose even the Sun if it meant sparing an innocent (and Diana was innocent at the time Leona passed judgment on her; although at least in her old lore Diana acted in self-defense). And I know that Leona was "shown the truth" when she became the Radiant Dawn - but it should have been how she thought as her own person. (Although this does raise the question... was Leona only Chosen because she spared the Golden Man, does he not know the venom that was on her tongue when they met for the second time? I thought the Mountain only chose the worthy...)