The ruling on a woman who begins menstruating while in a state of major ritual impurity without having performed the full ritual bath

Question:
If a woman is in a state of major ritual impurity, and her menstruation begins before she performs the full ritual bath, what is the ruling? Does she perform the full ritual bath for the major ritual impurity, or does she wait until she is purified?

Answer:
If a woman is in a state of major ritual impurity and then her menstruation begins, she has the choice. If she wishes, she may delay the full ritual bath for both, because she does not pray while menstruating. If she wishes, she may hasten to perform the full ritual bath for the major ritual impurity, which is better and more appropriate. In that case, only the full ritual bath for menstruation remains. She performs the full ritual bath for the major ritual impurity until the state of impurity subsides, and the full ritual bath for menstruation remains for her after the blood stops. This is the more appropriate course.