It is narrated from Abdullah bin Abbas (may Allah be pleased with them both) concerning the saying of Allah Almighty, 'unless they commit an immorality' [Surah al-Nisa: 19], that if she uses foul language against her family, then once she uses foul language against them, it becomes lawful for them to turn her out.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب العدد / 15484