Because of the difference between what her mom  tells her and what her friends at school, or her peers at school are telling her, she doesn't know who to believe.
Λόγω της διαφοράς όσων λέει η μαμά της και όσων της λένε οι φίλοι της ή οι συμμαθητές της στο σχολείο, δεν ξέρει ποιον να πιστέψει.