answer: Sarah tells Ken that she got home late because Bus 15 left 10 minutes early, then she waited 30 minutes for the next bus, but it didn't come, so she walked home. They decide to write a letter to local officials.
documents: #Person1#: Why did you get home so late, Sarah? I was worried sick!
  #Person2#: I had everything timed perfectly. I sat in the coffee shop, waiting for Bus 55. It is supposed to leave at 4:45 sharp. I take it everyday at that time because it arrives at the Waterson Station just in time to catch Bus 15.
  #Person1#: And you lost track of time, didn't you?
  #Person2#: No, Ken, not this time. I was at the bus stop on time and I was picking up my bag and getting to my feet at 4:35. I was two feet from the bus when it suddenly left.
  #Person1#: 10 minutes early?
  #Person2#: Yes, so I had to wait 30 minutes for the next bus. By then, there were no more buses leaving from Waterson.
  #Person1#: How did you get here then?
  #Person2#: I walked. Can you imagine? Me, a young woman, walking in the dark for an hour by herself?
  #Person1#: And in this neighborhood! Next time, please call me. That was so dangerous.
  #Person2#: I know. I'm lucky to be alive. What's wrong with the public transportation in this city? Don't they care about people who can't afford cars?
  #Person1#: We should write a letter to our local officials.
  #Person2#: And the newspaper!