Sentence 1: Barbara's daughter had been throwing up all night. 
 Sentence 3: Eventually her daughter felt better in the morning 
 Sentence 4:  Barbara called in the school to tell them her daughter was sick 
 Sentence 5:  Barbara took the day off from work to take care of her daughter 
 Option 1: Barbara didn't know because she was throwing up, too. 
 Option 2: Barbara stayed up all night watching her.