What does 2 Samuel 13:20 mean?

Her brother Absalom saw her and asked, 'Has Amnon been with you?' He told her, 'Keep quiet for now—he’s your brother. Don’t let this eat you up.' So Tamar stayed at Absalom’s house, devastated. 2 Samuel 13:20 - Modern Text Bible

(Absalom realizes what happened and tries to comfort Tamar, but she’s left broken and isolated.)