My Strange Persephone

What happens if Adar didn't actually die at his children's hands?

Sauron decides to spare Adar's life, both because he wants his former subordinate back, and because he wants to use him to draw out Galadriel. Can Galadriel come to Adar's rescue and defeat Sauron? And what kind of a relationship will they be able to have if she does?

As a side note, the story is called My Strange Persephone, because that's what Sauron calls Adar here. I kinda see them as being like Hades and Persephone (Sauron is a demon; Adar is an elf that was stolen from Lindon...), so that's where that comes from. Most of the story is based on the events of season two. Finally, fair warning, the story does get dark in places, but will conclude with a happily ever after for Adar and Galadriel.