Sentence 1: Izzy was trying to sleep but it was too hot. 
 Sentence 3: She realized she'd never be able to sleep in the heat 
 Sentence 4:  Instead, she took her blankets outside to the porch 
 Sentence 5:  There, the cool night air relaxed her and she slept 
 Given Sentence 2: She rolled back and forth in bed in discomfort.