Heavenly Ventures — Shirley K. Wolford

At the height of the Reign of Terror in Revolutionary France, Gwyn Holloway receives a frantic summons to rescue her sister, married to a French aristocrat and about to be denounced as an enemy of the people. Gwyn rashly departs for France on the next ship with only her maid and the mysterious messenger from Jillian.

Dashing Jeremy Madison, a friend of Gwyn's brother and the man she loves, is coincidentally on the same ship, sent to France on a diplomatic mission. Drawn to Gwyn, Jeremy gambles everything on rescuing her, her sister and her nephew from the guillotine on a new fangled invention--a fragile balloon.