The Elemental Ruins by Sam Burns

What do you do the day after the world doesn’t end?
If you’re River Keyes (yeah, me), you try to figure out how you’re going to live without the internet. Because we might have kept two worlds from being destroyed, but now I’m trapped in a place with no electricity, no takeout, and no phoning home.
Worse, it’s a world where my absent father is not just present, but in power, and even more of a jerk than I remember.
At least if I’ve got to be trapped away from home, there’s Lasya Zarani, hot elven general and best eye-candy ever. Once he decides whether he wants to cut me to ribbons or take me to bed, things might get interesting.
But that’s only if my father doesn’t kill one or both of us first.