וְאִם־לִבְנ֖וֹ יִֽיעָדֶ֑נָּה כְּמִשְׁפַּ֥ט הַבָּנ֖וֹת יַעֲשֶׂה־לָּֽהּ׃
And if he espouse her unto his son, he shall deal with her after the manner of daughters.
Read Jewish philosophy on Exodus 21:9: Rambam's Guide for the Perplexed, Saadia Gaon, and classical Jewish philosophical sources, free online.