Leda in Greek mythology was taken by Zeus, and was then taken by her husband, Tyndareus. She then gave birth to eggs (guys in the diner talking about eggs and whether they’ve been interfered with- I’m taking that as a hint).
One was mortal, the other immortal- Helen and Clytemnestra.
I feel like this is somehow tied into how Kira survived the car accident. The immortal egg, the immortal girl.