Second Dead: Book 1 in the Second Dead series

Sometimes, dead just isn’t dead enough.
Seventeen-year-old Annabel Wallis and her family have survived six months of the zombie apocalypse by stealth and cunning. However, Dad has a plan.
Annabel has far bigger problems than zombies. Souls deprived of the ‘good death’ torment Annabel to help them move on. Release, they demand.
They demand it of her.
Annabel’s mom has a secret, and an antidote, sans one important measurement. Annabel doesn’t know it, but her nightmares hold the key to deciphering the medicine’s ‘wanting measure’.
She must complete the remedy if the infected are to have any chance of surviving. To do that she must stay alive. Worse still, she discovers death is not the exit it once was. Annabel must reopen the path to the afterlife before they all face the horror of becoming second dead.
Books in this series:

SECOND DEAD
SECOND DEAD: BLOOD PRICE
SECOND DEAD: ANGEL OF DEATH