Doting Snake Lord

In the life Elena lived before this one, her sister Veronica and her fiance Grayson swapped out her golden dragon egg and had her accused of things she had not done, and she was left to die for it. She comes back to a point before any of it has happened. She goes to Nidhogg, the Dragon Lord who is being held prisoner, and asks him for a child, since carrying one is the thing most likely to keep her alive this time. She ends up carrying nine. On the day she goes into labor, Veronica and Grayson come at her again with accusations, and Nidhogg puts himself between her and them and says in front of them all that Veronica is a wyvern.