A Branch Covidian probably would not have publicized this death, as anyone with half a brain will realize that this will lead to fewer people vaccinating kids, which is something she does favor.

As for supremacism, there is no information on that either way. Just like racists prefer their own race to other races, but prefer themselves above everyone else (which led to things like renting apartments to blacks when that was not allowed by the Apartheid government), feminists prefer their own gender to the opposite gender, but they prefer themselves - and their family - above everyone else.