Adam Clarke on 2 Samuel 13:13

Speak unto the king - So it appears that she thought that the king, her father, would give her to him as wife. This is another strong mark of indelicacy in those simple but barbarous times. There might have been some excuse for such connections under the patriarchal age, but there was none now. But perhaps she said this only to divert him from his iniquitous purpose, that she might get out of his hands.