After two months, she returned to her father, and he did to her as he had vowed. And she had never had relations with a man. So it has become a custom in Israel
Jewish Publication Society of America Version (JPS1917) - Judges 11:39 >And it came to pass at the end of two months, that she returned unto her father, who did with her according to his vow which he had vowed; and she had not known man. And it was a custom in Israel,