Answer: That they have brainwashed the person.
Explanation: I believe the tone of these lines are that the people have brainwashed her into believing she is "stubborn and childish" even thought she may be the opposite of that .
I would assume that the author does this to show how indifferent the person in the book is, she/he doesn’t know what they are in life, this makes it relatable to readers who have had this feeling before and it shows how the character is feeling in that moment
