Changeless: Book 2 of The Parasol Protectorate

Alexia Tarabotti, now Lady Maccon, awakens in the wee hours of the mid-afternoon to find her husband, who should be decently asleep like any normal werewolf, yelling at the top of his lungs. Then he disappears - leaving her to deal with a regiment of supernatural soldiers encamped on her doorstep, a plethora of exorcised ghosts, and an angry Queen Victoria.
But Alexia is armed with her trusty parasol, the latest fashions and an arsenal of biting civility. Even when her investigations take her into the backwaters of ugly waistcoats, Scotland, she is prepared: upending werewolf pack dynamics as only A soulless can.
She might even find time to track down her wayward husband, if she feels like it.

***Also available as a manga adaptation***