Belmary House Book Two — Cassidy Cayman

Tilly's finally decided she wants to stay with Ashford in 1814, but even though he professed his love for her, he keeps trying to figure out ways to get her home. She thinks they could be blissfully happy regardless of his cursed house, their little undead problem, and the looming threat of the wicked Povest coven.
An old curse comes to light that forces them to seek help from Ashford's estranged relatives in Castle on Hill, where they find a way back to the twenty-first century that could easily be a trap orchestrated by his old nemesis, Solomon Wodge.
Ashford knows he could end up losing a showdown with Wodge, but even though he can't stand the thought of letting Tilly go, he knows she's better off without him, and he puts his life on the line to fulfill his promise to get her back to her own time.