Sentence 1: Catherine was camping with her friends. 
 Sentence 3: It was getting late and everyone was hungry and cold 
 Sentence 4:  Finally, she managed to catch a spark 
 Sentence 5:  Her friends were all grateful for the warmth 
 Option 1: She was trying to light a fire but the wind was impeding her efforts. 
 Option 2: She was trying to light a fire and the wind was helping her efforts.