It would be helpful to me if ANY Catholic priest agreed with this woman because it would make a difference when applying Catholic moral principles regarding cooperation in sin...and that is not a trivial matter. It doesn’t have to be a sedevacantist priest; however, I suspect that there is no proof that anyone does because so far I can’t seem to get any support for it anywhere.
Take care....
Why would the date of the murders or the number of murders make a difference to you? That's like asking if eating human baby jerky made and cured in 2019 is any less moral than eating fresh baby veal Parmesan.