Getting back on track
After lunch, all of the trains that had been delayed due to the puppy’s behavior were back on schedule. The entire operation was back on track, which meant Lilly could estimate when she would get her chance.
Waiting till midnight
The last train would arrive at the station about midnight. After that, there would be no traffic for the next 5 hours. Lilly has plenty of time to get back on track with the dog. But the trouble was that her shift had already ended at 7, when all the stores closed.