וַיֹּ֣אמֶר לֵ֔כִי וַיִּשְׁלַ֥ח אוֹתָ֖הּ שְׁנֵ֣י חֳדָשִׁ֑ים וַתֵּ֤לֶךְ הִיא֙ וְרֵ֣עוֹתֶ֔יהָ וַתֵּ֥בְךְּ עַל־בְּתוּלֶ֖יהָ עַל־הֶהָרִֽים׃
耶弗他說：«去吧。»就讓她去兩個月。她便和她的同伴去了，在山上為她的處女之身哀哭。
Rashi
Wept over her maidenhood. Since it is not written "over her maidens," the inference is, over her actual maidenhood.