Two Mothers, Twin Daughters

Two mothers, both fleeing from the British Isles during World War Two. Why does one worry about being a war bride, while the other one, who married a widower, seems more content? Why does Marita, the younger one give one, but only one of her twin daughters away? Why was Marita's husband sent home during the war? What will it be like leaving a city in England while a war is going on to settle in a Canadian wilderness? What will happen to the identical twins? How will they cope if, or rather ...