Parashas Bo · Shemos 12:4 · TT note 7
Torah Temimah on Shemos 12:4, note 7 (on בְּמִכְסַת נְפָשֹׁת) points to Pesachim 91b (women included in the count).
Sefaria — Exodus 12:4
Sefaria — Torah Temimah on Exodus 12:4
Sefaria — Pesachim 91b
E-Daf — Pesachim 91b
English: “According to the number of persons” — “persons” includes the woman. Rabbi Elazar said: A woman on the first Pesach is obligated and on the second is optional, and it overrides Shabbos.
Ribbui from the plural נְפָשֹׁת: women are counted among those enrolled.
Women are included in the enrollment for the Pesach and are obligated in the first Pesach.