Angelina Dalles? She's someone I stumbled on a couple years back and have been quietly following since. I remember the first book of hers I read—'The Whispering Glades'—and being absolutely floored by the atmosphere. She writes almost exclusively in the paranormal romance and urban fantasy space, but she's got this very distinct, moody, almost gothic-tinged vibe to her worlds. It's less about werewolves and vampires in a modern city (though they're there) and more about ancient pacts, haunted estates, and love stories tangled up with curses.
Her prose is dense, lush, really takes its time setting a scene, which can be a love-it-or-hate-it thing. It's not fast-paced action fantasy. I'd place her closer to Anne Bishop or maybe a less-historical Simone St. James than to, say, Ilona Andrews. Honestly, I think she's a bit of a niche author, not super mainstream, but her dedicated readers are really dedicated because nobody else builds quite the same atmosphere of romantic dread.