Yeah but Rhode was kinda raised to be a slayer so it would be hard for her to accept it... but maybe if she was told by the Divine himself then she would have to face the truth... Which would be hard for any Slayer to realise that all the blood they have spilt (including children's) was innocent ><
It is said in the game By the Divine himself that it was a trick by The Damned One that lead the Slayer's to try and wipe out the dragons and the Dragon Knights because they had formed an alliance with the Divine against him. He need time to re-build his army's and made sure the humans had some one else to fight wile he did so.
I agree the Dragons and their Knights were wronged big time by the Slayer's but it was the Damned One who set the hole thing up >< (Demon Of Lies or some thing isn't he?) so to me the Slayer aren't totally to blame and should be made to repent and be given a chance to regain their honour (Divinity 3? lol)