I was told by a boe that they are not really concerned about the apostates wives as they feel the wife is just following her husband . So women don't count if they just follow their husbands. They count if they are the jezebel type , not married , etc. Woman, as in Islam, don't have much status ( chattel ) in the Borg but having an elder husband can offer some protection, which it did in the above cases. I am assuming that none of the wives mentioned were extremely vocal and active and just followed their husbands lead. Being vocal ( jezebel type) will get your arse burned.
This is what I was told by a boe who were going after an elder who had the nerve to just walk away from the "truth" . They had no interest in DF'ing the wife as she was just following her husband lead.