She remains for nights without praying and breaks her fast during Ramadan, and this is the deficiency of her religion.
عن رسول الله ﷺ أنه قال: تمكث الليالي ما تصلي، وتفطر في رمضان، فهذا نقصان الدين.
Muslim narrated it in the Book of Faith (79) from Muhammad bin Rumh, from Layth, from Ibn Hadi, from Abdullah bin Dinar, from Abdullah bin Umar, and he related it at length.