Is Raizel from the future and if she is is she their daughter it would explain why they feel close to each other or is she another one of William’s wives.
I bet that before William and Lilith go back to Hestia... Raizel will said these words to them: "Goodbye Mom, Dad... I'm glad that I get to see you both". or something like that.
But then the portal was already closing so will and Lilith didn't hear it clearly.
