With this hadith, he stated regarding it that she used to perform ghusl for every prayer.
حدثنا يزيد بن خالد بن عبد الله بن موهب الهمداني حدثني الليث بن سعد عن ابن شهاب عن عروة
بهذا الحديث قال فيه فكانت تغتسل لكل صلاة
Muslim narrated it, Muslim narrated it in the Book of Menstruation, chapter on the woman with prolonged bleeding, her ghusl, and her prayer, hadith no. 334, from the hadith of Layth bin Saad through this route.