Catastrophe by Susan Donovan

Felicity’s to-do list: feed the cats; help a friend in crisis; and save the world. Again.

A cat lady in her prime…Former middle school English teacher Felicity Cheshire stunned everyone when she battled back an ancient god of chaos and saved humanity from destruction. All she wants now is to curl up in the sunshine and grab a well-deserved nap with her rescue cats.
A malfunctioning piece of mystical jewelry…When the gold and sapphire necklace that started all her troubles won’t release from her throat, it’s clear the danger is far from over. Worse still, her warrior priest trainer is stuck on earth and experiencing a midlife crisis two millennia in the making.
And a world on the brink…Felicity and her Goddess Posse of BFFs learn they must hunt down and defeat a horrifying new foe. On the way, they must deal with gray roots, swollen ankles, an unfortunate hickey, and an Airstream full of cats. Felicity may be stronger and wiser this time around, but she’s sticking with one hard and fast rule: no sit-ups.=