Peace be upon you and God's mercy and blessings.
Ayatollah Khamenei (may God protect him):
A virgin is defined as one who has not lost her virginity through a valid legal contract. If she has lost her virginity through unlawful means, she is treated as a virgin, and it is not permissible to contract marriage with her without the permission of her guardian, as a precautionary obligation.
Ayatollah Sistani (may God protect him):
A virgin is one whose husband has not had sexual relations with her. If she has lost her virginity through unlawful means, she is considered like a virgin. For a marriage to take place with a virgin girl, the consent of her father or paternal grandfather is required if she is not independent in her life affairs and does not have control over her own matters. It is a precautionary obligation to obtain the consent of one of them if she is independent in her affairs.
May you be successful in all good.