Stray Magic (Faerene Apocalypse #1) by Jenny Schwartz

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When magic crashes through the Rift, Earth devolves into an apocalyptic nightmare. Survival becomes the only game in town, and college girl, Amy Carlton, learns she’s a more ruthless player than she ever imagined. Magistrate Istvan signed up for the Faerene Migration knowing that the price of Earth’s future would be paid for in hellfire and blood. But the black griffin hadn’t anticipated humans accessing magic. Now, a new and impossible bond must be forged between a Faerene invader and a human familiar. But first Istvan and Amy must survive to form the bond. *Note: “Faerene” refers to the many peoples of another world: the griffins, dragons, unicorns, werewolves, elves and ogres who've crossed to Earth. No prepper or survivalist could have been prepared for their arrival.

The House That Walked Between Worlds (Uncertain Sanctuary Book 1) by Jenny Schwartz

A tornado of chaos is tearing through Reality and in its path is the newest House, a bleak and forbidding fortress built of magic and grief by the most unlikely of sorcerers, a human. A reckless act of compassion costs Dr. Kira Aist her family and her future on Earth. To escape her enemies, she calls on her heritage as a descendant of Baba Yaga and walks between worlds. As Kira roams the paths of Reality, strangers are drawn to her House. Some seek refuge, some seek power, and one just wants kitty treats. With the fate of multiple worlds hanging in the balance, Kira must discover what it means to be a sorcerer and the keeper of a House.