"Nesta could see the portrait Lanthys wove into the air around them. She saw herself on a black throne, a matching crown in her unbound hair....
Their kingdom was endless; their palace built of pure magic that lived and thrived around them....
soon, soon his seed would take root in her womb and the child she would bear him would rule entire universes—"
What if: this is the same vision Mama-Rhysand saw for Rhysand? She saw Feyre years in advance and knew through her, her son would rule on a throne and birth a child (Nyx) who would rule galaxies...restore Valg power on distant planets?
It's why she made the dresses perfectly sized to Feyre. It's why she hid the ring in the Weavers Hut because Mother Forbid he fell in love with another or chose the wrong girl who wasn't the one of the prophecy. Mama R had to have known Feyre (the girl of the prophecy) would have been able to retrieve the ring.
It's why when Rhysand returns without Feyre, Amren is visibly upset. I think Amren is also in on the vision.
“Where is she?” Amren snapped.
“Where is she?” Amren demanded.
At first read,I thought this was because Am actually cared about Feyre, or at least Rhysand and was concerned. But, now, I don't think it was genuine care for Feyre that prompted her demand. I think it was more concerned of what Feyre is and what losing what she IS meant to their plan. The "Go get her. Right now.” demand wasn't a 'she's my bestie and the love of your life, we can't let her go' sentiment. It was a you let the most vital part of our plan go. The part of our plan we've been working on for hundreds of years. You idiot.
I also think Rhys seeing the girl in the cabin drawing stars on a dresser was an ode to his mother's vision/his own daemarti searching for the girl of the prophecy.
And the "there you are are" calanmai comment, was a yep there's the girl of the prophecy
And the getting her into a bargain, where she's at his place 2 weeks of the month... was another confirmation... this is the girl of the prophecy. I need her near me for this plan to work.
It's why he was shocked. Shook. When he found out she was his actual mate. Burst into the room telling Mor: "she's my mate!" Because Mor also knew the prophecy and didn't expect the girl of the prophecy to be his actual mate.
I also want to note when Nyx died time slowed down. The same way time slows down when Asteri and angels in CC died. That baby gives me Valg/Asteri vibes. The seed to rule galaxies vibes.
One last addition, I go as far as thinking Rhys suggested the Curse to Amarantha for a Human Girl, because he knew the girl of the prophecy was human.