Christiane was engaged by her father with the noble Hannibal Sehested, Viceroy of Norway, in 1636.

In 1651, her husband lost his position, and she was called to Copenhagen to sign a statement in which her spouse was deprived of his Norwegian estates.

Her relationship with Sehested, and her siblings was not close, and in 1651–1658, she lived alone in poverty in Hamburg.

She returned to Denmark in 1658 to side with the invading Swedes with her spouse to avenge the loss of her status; they joined the Swedish camp outside the sieged Danish capital.

In 1660, Sehested regained the trust of the court, and in 1662, she was given back her personal status as countess.