Sentence 1: Mavis had a dangerous cat named Muffles. 
 Sentence 3: Muffles attacked Trisha from behind the sofa 
 Sentence 4:  Trisha was scarred on her face and ears 
 Sentence 5:  Trisha ran away, vowing never to set foot in Mavis' house again 
 Option 1: Mavis' friend Trisha came over for tea but Trisha had to leave because of the allergies right away. 
 Option 2: Mavis' friend Trisha came over for tea.