Sentence:  "And at school everyone knows I'm Dana Winslow's younger sister. Mr. Johnson, the science teacher, even calls me Dana sometimes." / Dana looked up then. "Do you answer him?" / "I have to. If I don't he thinks I'm not participating." Aly got up and <WSD>trounced</WSD> over to the bookcase. 
Meaning of the word marked with <WSD> tags:  To pass across or over; to traverse.