halacha - If a woman converted via Orthodox but had no intention and kept no mitzvoth- are her children jewish

A non-Jewish women converted via an Orthodox conversion in order to marry a Jew. At the time of conversion she claimed to accept the mitzvot but did not intend and never kept proper halachot including Kashrut, Shabbos and Taras HaMishpocha- are the children of such a marriage Jews according to Orthodox law?