What Rabbi Tendler said does not contradict the Rishonim and Acharonim. There is no isur for women to learn Gemara. They are b’geder einah metzuvah v’ose:
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(Rambam, Hilchos Talmud Torah 1:13)
People confuse the halacha about teaching girls Torah with a prohibition on women learning Torah for themselves.
See the Perisha on Y”D 246.
