pay the father.
but when slavery and rape are the comparative cases, need to go back to the books.
this page discusses the source for why the money for kiddushin should
go to the girl's father, and not to the girl. It is compared to rape,
where the father would receive the penalty payment. And to the freed
slave girl, who is redeemed on becoming mature, and she leaves without
money. no payment is made for her to leave. Unlike the daughter where
money is paid. Also on this page is discussed a different type of
acquisition called an exchange, but this is not suitable for kiddushin
as an exchange can be done with something of very small value, and no
woman would go along being sold so cheaply....