Marita's Misery: Two Mother, Twin Daughter

.Two mothers fled from the British Isles during World War Two. Why is one anxious and nervous, while the other one, who married a widower, is more relaxed? Why does a heartbroken mother give one but only one of her twin babies away? Why is her husband sent home from the battlefield? Is he mentally ill, or something worse? What will it be like leaving a big city during wartime and settling in a Canadian wilderness?