John Gill Commentary 2 Samuel 13:14

"Howbeit he would not hearken unto her voice; but being stronger than she, he forced her, and lay with her." — 2 Samuel 13:14 (ASV)

However, he would not listen to her voice
His lust was so inflamed and enraged, that he could not attend to any arguments, though ever so forcible, that were offered to him:

but being stronger than she, forced her, and lay with her ;
whether she cried out or not, as the law directs in such cases, (Deuteronomy 22:25–27) ; is not said; she might, and nobody hear her and come to her assistance; or she might not choose to expose her brother to his servants.