Sentence 1: Lana was having a baby shower. 
 Sentence 3: Her mom said that she would be working that weekend 
 Sentence 4:  Instead, her mom drove a friend's daughter to a college interview 
 Sentence 5:  Lana found out on Facebook, and was heartbroken 
 Option 1: She had been arguing with her mom and didn't invite her. 
 Option 2: She invited her mom, hoping she would attend.