וְלָקַ֛ח אֲבִ֥י הנער [הַֽנַּעֲרָ֖ה] וְאִמָּ֑הּ וְהוֹצִ֜יאוּ אֶת־בְּתוּלֵ֧י הנער [הַֽנַּעֲרָ֛ה] אֶל־זִקְנֵ֥י הָעִ֖יר הַשָּֽׁעְרָה׃
Wezmą tedy ojciec dziewczyny, i matka jej, i wyniosą oznaki dziewictwa dziewczyny owej przed starszych miasta, do bramy;
Rashi
אבי הנערה ואמה [THEN SHALL] THE FATHER OF THE DAMSEL, AND HER MOTHER [TAKE AND BRING FORTH etc.] — Let those who have reared this depraved child (lit., “evil plant”) be exposed to contempt because of her (Sifrei Devarim 235:9).
Ibn Ezra
The father and mother of the young woman if they are alive, otherwise someone appointed by the Court.
Rashbam
את בתולי, according to the plain meaning this refers to the blood lost when the bride’s hymen was broken, a residue of which is on the sheet of the bed.