But that's the thing...What if nobody does?
Regina, as a Guardian faces a noticeable lack of accountability(A running theme if you look at all of them) due to her being viewed as a protector of the kingdom despite her deeds and actions...She's never really called out on it(The Queen made her a Guardian due to her strength despite the slaughter she commited(Maybe she had a point, but nobody cares to argue about her actions), Diula overlooks or does not understand due to the fact she is a traumatized weapon of war that was showed mercy and trauma bonded with Regina, the citizens don't really care what she does due to her rep as a protectress of nature, etc.)