The Cold Equations: Our time is up. I told Gerry I had to go. Her voice broke mid-sentence, almost crying. (Did I do good, I hope so have a good one!)
Answer:
Apostrophe
Explanation:
The persona is directing the words to someone who appears to be in his presence
"...which you were probably..."
The speaker is addressing an absent or imaginary person that the reader cannot see but he can see or pretend to see