Please help me!!

How does Via convinced Auggie to return to school? (Wonder)​

She explains to him that he has an upper hand in the situation (knowing that Jack was saying bad things about him). She then tells him that if he refuses to go back to school on his own, she'll tell their parents who will tell the school principle and that everyone will start treating him like a freak that needs to go to a special needs school. That is ultimately what makes up his mind to go back.

what do you mean

she needs to add a conclusion summing up the entire essay along with an ending sentence to complete it all nicely.