Why does the Torah repeat the La'av of Hasavas Nachalah
1.
Bava Basra, 113a: The current Pasuk is refrerring to Hasavah via her husband
1
- who, as opposed to her son, is called "Acher". Pasuk 7 must therefore be referring to Hasavah via her son.
2
This opinion holds that a husband inherits his wife min ha'Torah. See Torah Temimah, citing Bava Basra, 111b, and note 13, where he elaborates at length.