TRURO — On a Thursday morning in early December, Rana O’Laughlin arrives at Jelena Duarte’s house, greeted by Pickle the cat and Duarte’s 18-month-old daughter, Vera. The atmosphere is subdued, as if dictated by the gentle breaths of the newest family member, baby Mila, born on Nov. 25 at Cape Cod Hospital, who sleeps in her crib in the living room.