Sentence 1: Sandy was driving to meet her sister. 
 Sentence 3: At that moment, Sandy hit the trunk of a tree 
 Sentence 4:  Sandy was startled, but ok 
 Sentence 5:  Sandy realized that she could have died trying to send text messages 
 Option 1: Sandy decided to call her friends. 
 Option 2: Sandy decided to send text messages to several friends.