The Redeemable #4 by Grace McGinty

The end is nigh!
Ace is back. She has her wings, her lover Lucifer, and her smokin’ hot body back in her possession. Plus an extra soul. But they were going to have to put the celebrations on hold. She couldn’t rest easy knowing that while she had it all now, Arcadia had lost everything. She would search heaven and hell to for a way to get Arcadia back into her own body, and back to her Seven Sins and her newborn babies.
This is the final instalment of The Redeemable serial. This series is reverse harem, and filled with sex, occasional swearing, and orgies in Hell.