Is a woman sinful if she says "I am not praying" or "I do not have to pray" while she is menstruating, in response to someone's question during prayer?

If a woman experiences menstrual bleeding, the obligation to pray is lifted from her, and her prayer is not valid, due to the Prophet’s (peace be upon him) saying: "Is it not that when she menstruates, she neither prays nor fasts?" A menstruating woman is commanded to make up for the fast but not the prayer. So, if the woman's question is about the lifting of the obligation to pray during menstruation, then there is no blame upon her.