The young woman, originally from Morocco, was driving home from the party on Friday night when two other cars trapped hers, newspaper Midi Libre reports.
The men are reported to have beaten her up before leaving without saying anything.
After they had left, the woman drove home. Shortly afterwards, she headed towards the local police station to report the attack.
On her way to the station, the seven men tracked her down again and assaulted her a second a time.
According to the woman, the men issued threats and said: “You are a bad Muslim”, and “you bring shame to Islam because you went to a party on a day of Ramadan.”