Jamieson, Fausset and Brown on Judges 19:2

2. his concubine ... went away from him unto her father's house--The cause of the separation assigned in our version rendered it unlawful for her husband to take her back (De 24:4); and according to the uniform style of sentiment and practice in the East, she would have been put to death, had she gone to her father's family. Other versions concur with Josephus, in representing the reason for the flight from her husband's house to be, that she was disgusted with him, through frequent brawls.