Find+“Blue+Boy”+and+look+for+the+horse+later

We decided to leave this horse alone because we didn't know if it was wild or if it could hurt them. The left to get back on the real trail. As they went along the path there they heard a noise that sound like a horse. The boy said it sound like "Blue Boy." It was Five O'clock already and she promised her mom she would be home by at the latest five-ten. "Blue Boy" sounded like he was far away. What should she do?

Go home and look for the horse the next day

Or

Keep looking for the horse and explain to her mom why she was late