Crimson Kiss by Lyra Winters

In a couple of months, Lilith Whitlock had gone from human to vampire to demon. Turned out, she was destined for more than human life all along. She was Lilith… Mother of demons, yep. That Lilith.
With all her memories intact and four protective supernatural men on her side, she was more than ready to take on the prophecy everyone kept blabbing on about.
Balance was skewed all because of her murder half a millennia ago. Now, the realms were collapsing into each other, causing natural disasters all over. The scales tipped toward evil in the living realm, and The Crimson Demon was the only one capable of stopping it.
On top of saving the world, her temperamental vampires had one Hell of an adjustment period to the news of who Lilith actually is.
No pressure, right?