Quite disappointing to hear; I know the feeling on discovering unfortunate things coworkers believe :(. I can scarcely imagine the feeling of seeing real progress happen on trans acceptance, only to then see a blowback coming, right at the end of your life. Glad she will be remembered positively.
If this is verified, I think a black band is 100% warranted. As I understand it, she was a real innovator in VLSI, which I think we all agree is somewhat important :)
The readme does say that the goal here is to either get this work upstreamed to CPython or to inspire/inform improvements to it, not to replace/supplement it.
https://github.com/protonpass