Catalyst by Susan Donovan

One tough cookie…
Felicity Cheshire has survived cancer, medical bankruptcy, and the world’s slimiest ex-husband. Now she’s about to be evicted from the ramshackle Airstream on the Oregon coast that’s home for her and her twelve rescue cats.

One last kitty…
When her car breaks down during a freakish rainstorm, Felicity spies an injured tomcat on the roadside and thinks, “how much trouble can one more be?” A lot, as it turns out. Soon there’s a naked mystery man in her bed and her small-town, middle-aged existence careens to WTF? territory.
Two weeks to save the world.

With her posse of badass BFFs at her side, Felicity takes a terrifying journey from has-been to hero, where she must face her darkest fears in order to save those she loves. She might even have to attempt sit-ups.