You're asking about Shelly Crane? I feel like her 'Significance' series was the gateway drug for so many of us into the YA paranormal romance scene a while back. That's probably her most popular work, hands down. The whole soulmate premise with Maggie and Caleb felt fresh at the time, even if the genre got saturated later. I devoured those books as a teenager.
Beyond that, 'Collide' gets a ton of love. It's a standalone contemporary romance with a bit of a 'bad boy' redemption arc. It's less supernatural but still has that intense, all-consuming love vibe she's known for. Her 'Devoured' series is also solid if you want something a bit grittier and more adult, with fallen angels and demons. Honestly, her popularity really centers on 'Significance'—it's the one that always pops up in reader groups when her name is mentioned.