Hades,
She is well. I thought long and hard about writing you a letter, considering it's been about a few millennia since I've seen you after I disappeared without so much as a goodbye. However, I find that I must tell you that she will awaken soon. Pluto's alignment is near.
I've taken great care of her. And because of this, I have only one thing to ask.
Please don't come to look for her.
I've placed her somewhere extremely safe, and I will always watch over her. I understand that you want her back by your side, and that you've waited for so long, but even if you did come for her, she will not remember who you are. Her memories have been put away, and I have replaced them with new, mortal ones. She will know nothing of her past life with you or I, and I intend to keep it this way. For her safety.
I wish for nothing but your happiness, as well as Persephone's. So trust me when I plead and beg you to never see her again. If circumstances were different…
I'm honestly and truly, very sorry.
-Hecate