Toseftá sobre Deuteronômio 22:19

Both the rapist and the man who spread false rumours about his wife's virginity (motzi shem ra), if they divorce [her], they force him to return [her]. If they are priests [and so can't get remarried to someone they divorced], they are lashed with 40 lashes. Whether its the rapist or the seducer, either she or her father can prevent [the marriage], as it is said, "If objecting her father objects" (Shemot 22:16) [proving her father's consent is required] and it is said, "She will be for him a wife" (Shemot 22:19)—i.e. with her consent [as well]. For him you can force, but you can't force him to be a levir.

Rabbi Yehuda forbids [marriage] with [a woman who was] raped by his father or seduced by his father, as it is said (Lev. 18:7-8), "You shall not uncover the nakedness of your father, etc.," and further on it says (Deut. 22:13), "A man shall not take his father's wife, and he he shall not uncover his father's garment." And it says (Deut. 22:19), "She is to remain his wife, etc." § A [female] convert whose sons converted along with her: They (i.e., her deceased husband's brothers) do not perform chalitzah or yibbum. [If her sons'] conception was not in sanctity, and their birth was not in sanctity they do not perform chaltizah or yibbum, and they are not liable on account of [the prohibition against marriage to] "the wife of one's brother." [If her sons'] conception was not in sanctity, but their birth was in sanctity, they may perform either chalitzah or yibbum, but they are liable on account of "the wife of one's brother." [If] their conception was in sanctity and their birth was in sanctity, behold, they are like an Israelite in every respect.