she lacked; she was missing
Видимо то, чего ей не хватало всю эту жизнь.
Apparently, it was what she had been missing all her life.
— Летняя пора (1955)
She was at a loss for words.
Но на самом деле ей не хватало внимания.
But in reality, she lacked attention.
— Воспоминания о Марни (2014)
Ей не хватало слов, чтобы выразить свои чувства.
She couldn't find the words to express her feelings.