Grainger, Jean. Star and the shamrock (Series) #1

The "a" in the word star of the title, is replaced with a six-pointed geometric star figure

"When her husband doesn't come home one day, Ariella realises that the only way she can ensure her Jewish children's safety is to avail of the Kindertransport, but can she bear to let them go? A thousand miles away, Elizabeth Klein has closed herself off from the world. Losing her husband on the last day of the Great War, and her child months later, she cannot, will not, love again. It hurts too much. But she is all Liesl and Erich Bannon have. Thrown together in the wild countryside of Northern Ireland, Elizabeth and the Bannon children discover that life in the country is anything but tranquil. Danger and intrigue lurk everywhere, and some people are not what they seem."--Back cover