Q. Since eating on Erev Yom Kippur is a mitzva that is time sensitive, should the wife join her husband also at the late supper? (See question 1861 above.)

A. Poskim disagree if women are also included in this mitzva, since it is indeed time sensitive and that should exempt them. However, maybe due to it being linked to the fasting on Yom Kippur and since women do have to fast they should also take part in the mitzva to eat. Many Poskim seem to agree that women are subject to this mitzva. (Teshuvos R’A. Eiger 16, Hochmas Shlomo on siman 604, Ksav Sofer 112, Rashash Suka 28b, Sdei Chemed – Yom Kippur 1: 5, et. al.).
Horav Shlomo Miller’s Shlit’a opinion is that women should indeed include themselves in the mitzva.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a