Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

In the movie Don't Breathe, the very first opening scene shows the old man dragging Rocky in the street, and a thick trail of blood left behind. But at the end of the movie, Rocky was about to leave with her daughter and was at the station. From the beginning scene, it seems that Rocky was fatally hurt, so how was it possible for her to leave with her daughter, so soon after the incident without taking medical assistance? I am saying "soon", because she was looking at the television where the news of the invasion was showing, which was of course on the very next day of the incident or on the same day maybe. What is the most probable explanation for this?
How does the climax make sense?