Joseph,
The question came up in a Shiur about a year ago, that he gave at a Semicha ceremony for those of us who completed Hilkhot Niddah and Mikvah. The precise question was could a Rav review with his wife the Hilkhot of Niddah including the relevant Gemmaras so that she could help as a go between in the case of Shailot to save the woman asking embarrassment. That was his answer. For R’ Yosef you can find it in Yalkut Yosef Hilkhot Limud Torah. Considering that R’ Eliashiv has repeatedly referred to R’ Yosef as the Posek HaDor, that in itself constitutes a psak. When dealing with words of such Gedolim I would say it is better to leave to them and aside form that AYLOR.
Other supporting evidence would be the Ben Ish Hai, in Rav Pealim and also in Laws of Women. In laws of women he states that it is a necessity that a woman learn the relevant Torah SheBaal Peh as well as possible.
R’ Yehuda Deri reiterated the same, as well as gave a psak that it is a learning husbands job to see that his wife has the requisite knowledge in the above during a shiur at Yeshivas Toras Yisrael.
Chareidi Midrashot in E”Y teach basic gemmarra skills to the women in third year(yes I know third year has been essentially cancelled this year unless one can prove they will be a teacher) however they quote as their Rabbinic authorites R’ Eliashiv, R’ Auerbach, R’ Styman and the Rebbes of Gur and Belz. Somehow I doubt this would be going on without the support of these Gedolim.
Tzippi,
That may be the case. It is a point that overall to me seems irrelevant, and something I have no desire to argue.