Available as both manhwa and novel.
The Lady Hides a Zombie [Novel] La princesa esconde a los zombis
Also known as: A Beginner's Guide to Hiding Zombies · La princesa esconde a los zombis · Lady Hides Zombies · The Duchess Hides a Zombie · The Duke's Daughter Is Hiding a Zombie · The Lady Hides a Zombie · The Lady Wants to Hide Her Zombie Family · The Lady Who Hides the Zombies · The Noble Lady Hides a Zombie · The Princess Hides a Zombie · The Princess Hides Zombies · ゾンビを隠す公爵令嬢 · 공녀가 좀비를 숨김 · Gongnyeoga Jombireul Sumgim
After a carriage accident leaves her family in (literal) pieces, Emily Walker is desperate to bring her brothers and twin sister back. With the help of a demon cat named Lev and a dabble in dark magic, she succeeds — but something isn’t right. The Walker siblings are cold, weak, and, well... dead. Now that her siblings are zombies, Emily faces a new challenge: keeping House Walker’s secret safe from the evils that await. How can she hold her family together when it seems destined to fall apart?