A Celestial Christmas — Judy Mays

Fourth in the Celestial Passions series
Princess Jami of Mediria is determined to give her adopted sister Brianna of Earth a Christmas, even though she'd never heard of this holiday before Brianna described it so longingly. Jami descends on a snowy chalet of the Alalakan clan to plan the surprise celebration.
Years ago, Alalakan don al' Marcadras foiled a plot by the woman he loved to murder Mediria's king. Scarred physically and emotionally, he retreated to this isolated family estate.
Marc's desire for privacy and quiet is pitted against Jami's insistence on duplicating Earth's festivities. Nothing Marc can say or do will distract her, not even seducing her. The hot sex they share only further inspires her to make this the best Alalakan Christmas party ever.
Unfortunately, not everyone on the estate gets in the holiday spirit. Some see a Medirian princess's presence as an opportunity of another sort…
Reader Advisory: This story has graphic sexual language and scenes -- no closed bedroom doors (or other rooms) here!
An adult scifi romance from Ellora's Cave