Sweet Home Highland Christmas by May McGoldrick

Freya Sutherland is a desperate aunt trying to keep custody of her precocious young niece, Ella. After the death of her father, Freya is willing to do anything to prove she’s capable of being Ella’s guardian, even if if means marrying for security instead of love.
Recently retired from the military, Captain Gregory Pennington wants nothing more than to make it home in time for Christmas. When his brother hears of his plans to return to the family estate for the holidays, he asks Penn to escort some travelers to the bordering estate.

When Freya and Penn meet their chemistry is instant. Once they realize he’s their escort for the journey, there’s no escaping their attraction. But Penn has plans that do not include a wife and child. And Freya has responsibilities as Ella’s guardian, no matter her growing discontent with her upcoming marriage. With Ella conspiring to get them together, Penn and Freya might just experience a little magic during the holidays.