The Girl Who Fell Through Time by Katherine MacDonald

“The problem with holding you, Selene,” he says quietly, “is that every time I do, it gets a little harder to let go.”

Selene Duskbriar is like any other young noblewoman—elegant, pampered, and wholly unprepared for betrayal. But when her ambitious husband steals her birthright, sparks a war, and ultimately causes her death, Selene’s life takes an unexpected turn. Sent back in time to the day of her engagement, she seizes her second chance to rewrite her fate.
In a desperate move, Selene marries Lord Dorian Nightbloom, a kind but unassuming lord, and flees to his quiet country estate, determined to hide from the schemes of her former husband, Duke Drakefell. Surrounded by Dorian’s gentle nature and the loyal warmth of his household, Selene’s heart begins to open in ways she never expected, drawing her toward a new life—and love—that she never knew she could want.
However, Duke Drakefell hasn’t forgotten his plans, and with her unique knowledge of the future, Selene may be the only one who can thwart his deadly ambitions. But will love and courage be enough to stop a war—and can she finally become the heroine of her own story?

A slow-burn tale of love, yearning and healing, set amidst a glittering, regency-style world on the brink of war.