Can a woman experiencing irregular bleeding (mustahadah) make up many prayers with a single ablution, and is it permissible to delay making them up until after her period of irregular bleeding for the sake of ease?

A woman experiencing استحاضة (prolonged vaginal bleeding outside of menstruation) may pray missed prayers with a single ablution (wudu') during the time of her regular wudu', as long as she does not invalidate it by other means. This is the view of the Hanafis, Malikis, and Hanbalis, and it is the easier approach. She is not permitted to delay making up missed prayers; rather, she must make them up immediately.