The Wailing Woman of Brackencliffe Abbey — Merabeth James

Book Five: Some say 'good things come in small packages' which makes one wonder if bad things don't come in them as well. The truth of that is something Meg and Charlie Ravynne discover when they head to England to keep a promise they reluctantly made to their overbearing mother.
It was promise that neither sister imagined would have them staying at a ruined abbey perched on a cliff high above the sea and cut off from the outside world by the changing tides.
Once there, Meg poses as a governess to a troubled child while Charlie struggles to resist an inexplicable attraction to the scarred, darkly handsome owner who is haunted by his dead wife…the wife he confessed to killing.
Layer upon layer of the darkest secrets are woven into the very walls of Brackencliff Abbey where troubled, restless spirits seek their revenge.