One should understand how much Selene was holding back when it comes to Aether's women... It's not like she hates them... well, she hates them a little, but it was never to the level of killing.
... Well, maybe just a little, a fleeting urge sharpened by a woman's instinct, but still she restrains herself, shaping her thoughts into that of a calm and 'understanding' woman who wants nothing but to support her husband, especially when he was walking through so many shifting phases of his life.
So, as lovingly, willingly as she could manage, she agreed to share him with others, to stand beside him without tearing apart what he chose... but at the same time, she was quietly, carefully trying her best to limit the number of bitches that were getting near him, cutting them off before they could root themselves too deeply.
Even though it was hard...
Still, she tried her best.
Really, she did!
