Maimonides - Laws of Forbidden Intimacies

Chabad rabbi Yehoshua Gordon explains the laws of forbidden intimacies from the Mishneh Torah. If a Jew rapes a non-Jewish girl above the age of 3 the punishment is execution - for the girl.

Mishah Torah - Sefer Kedushah - Issurei Biah - Chapter Twelve - https://www.chabad.org/library/article_cdo/aid/960660/jewish/Issurei-Biah-Chapter-Twelve.htm

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If, by contrast, a Jewish male enters into relations with a gentile woman, when he does so intentionally, she should be executed.23 She is executed because she caused a Jew to be involved in an unseemly transgression, as [is the law with regard to] an animal.24 [This applies regardless of] whether the gentile women was a minor of three years of age,25 or an adult, whether she was single or married. And it applies even if [the Jew] was a minor of nine years old, [she is executed].26

This [punishment] is explicitly mentioned in the Torah, as [Numbers 31:16-17] states: Behold they were [involved] with the children of Israel according to the advice of Balaamו.27 Execute any woman fit to know a man through lying with a male."