The Last Keeper Chronicles by Tracey Humphrey

Blackthorn House has always remembered its people. Now another version has appeared inside it - and it wants its name, its rooms and its owner back. When rooms begin disappearing, seven worlds start bleeding together. A claimant from 1888 insists the house was stolen. The black Chronicle demands an answer. And somewhere inside the walls waits Willa Maren - the girl who died first, and whose life may have become the house itself. To stop Blackthorn House from consuming every connected world, Elara Finch must find the Last Keeper. But the only solution requires one person to surrender their future and become the centre forever. Elara has spent her life refusing roles chosen for her. Now she, Milo, Mabel, Rowan and the people no world remembers must prove that a home can survive without owning anyone. Atmospheric, mysterious, darkly funny and full of heart, The Last Keeper Chronicles is the powerful final book in The Veilkeeper Chronicles.