Sif not spwaning help

[Brennagade]

Sif isn't spawning in new game plus. I went through the doors amd grabbed the ring and she never spawned. I won't be able to enter the abyss now so is there any way to add the ring via console commands or am I just gonna have to scrap this save.

[Zefar]

Sif only spawns when you walk infront of the grave with the sword. You can always grab the ring before the battle.