"Darling". Tom heard Sybil whisper in her sleep.
He always thought it was just a name men and women called each other.
He learned in his years as Downton's chauffeur that this was a term of endearment among the Crawley family. And Sybil is his family now, a much as he is hers.
His heart broke a little. Her parents didn't come to their wedding.
"They'll come around." He promised her and himself. For their darling's sake.