The one where Sherlock was surprised.
He hadn't expected this. He was prepared for anger; he had assumed frustration, disappointment, even a bit of resignation. But not this.
He hadnt expected Molly to look at him with such understanding and sorrow; sorrow at the lengths he went to find answers to puzzles, to save his beloved friends…maybe somewhere also to save himself some pain.
Sherlock Holmes was rarely surprised, but he was stunned when Molly looked at him with such empathy and understanding and then walked slowly to stand in front of him. Searching his face and finding the answers to her silent questions, she took a deep breath then stepped even closer, folding her arms around his waist and sighing softly into his chest in an utterly tired tone, "Oh Sherlock, the things you feel compelled to do."
It was then that he shakily exhaled the breath he didnt realise he was holding. As he brought his arms to hold her close he saw that there still was hope…they still had faith…he still was human. And he was not alone.