Sentence 1: Amy woke up on the couch. 
 Sentence 3: Her mother stood over her scowling 
 Sentence 4:  Amy meant to clean the mess up before she fell asleep 
 Sentence 5:  Her plan had fallen apart 
 Option 1: She had fallen asleep after doing her homework. 
 Option 2: She had fallen asleep watching TV after eating dinner.