SOLVED. Woman on reality show when catastrophic world event occurs. [s]

[Libby]

Didn't actually read this book, all this info is from the inside jacket description. A woman on a reality show, alone in the woods, stumbles upon a town after a catastrophic world event and doesn't know if it's real or part of the show. She's concerned about her family and is trying to find out if they're ok. I think the word "one" was in the title. It was published recently.

[Kym]

The Last One by Alexandra Oliva?

[Libby]

Yup, that's it! Thanks