answer: Ann's dad wakes her up. Ann finds she slept through her alarm.
documents: #Person1#: Hey, Ann. Wake up. It's time to get out of bed.
  #Person2#: Oh, Dad. Do I have to get up right now?
  #Person1#: Yes, or you'll be late.
  #Person2#: Why didn't my alarm go off today?
  #Person1#: It went off 30 minutes ago.
  #Person2#: I must have slept right through it.
  #Person1#: Rise and shine.
  #Person2#: OK. I know.