In My Wildest Dreams by Cherie Marks

It’s time to turn the tide!

Hollyn Oates has no control over her magical abilities, and if she’s going to face her father, Grigori, the tear-stealing warlock, then she’s got to get her hocus focused. Just as the moon controls the tides, the upcoming full moon controls her fate. Hollyn must face the ocean of emotion she’s repressed and trust the salty but sassy Sea Witch, Yumia, to unlock the full force of her magic and defeat her father for good.
Above the waves, Kai Iona—Son of Poseidon, heir to power he never asked for—is beginning to see the cracks in his celestial family’s golden armor. He travels to Atlantis with Poseidon, but once he’s there, he must face the truth. Kai is a pawn in a game he never agreed to play. When Hollyn is sent away with a tempting bodyguard, he realizes love may be the only power worth wielding. His new goal: get to Hollyn and, together, cause a comm-ocean.
As fate drives them to the edge of the world—and into the molten heart of an active volcano—Hollyn and Kai must finally face her father. With the seas in turmoil, volcanoes awakening, and magic in the air, their love will be tested in fire, song, and sacrifice.

Because this time, the end isn’t just near—it’s erupting. And they never imagined it would end this way, not In Their Wildest