Sentence 1: Becky was excited because her cat was ready to have kittens. 
 Sentence 3: That night, Becky heard the unmistakable sound of new kittens 
 Sentence 4:  She couldn't find the mama and babies in the special spot she made 
 Sentence 5:  Becky followed the sound to find the kitties in the bathtub 
 Option 1: She made a special spot and watched as the mama cat gave birth. 
 Option 2: She made a special spot for the soon-to-be mama cat to give birth.