I finished the Dremora Waifu if anyone is interested. You can find her in the Midden by the Atronach forge. You can also buy tomes to summon her from Falion, Phinis Gestor and Neloth. I figured out how to use Skypatcher to give them the tomes and it was surprisingly easy.
The follower is the same level as the player and the summoned version is the same level as the Dremora Lord, 46.
Let me know if there's any issues with her!
https://mega.nz/folder/Aq4xhYgJ#nuwt7e5zMbxVM2i19F07rQ