She foresees a schism within the Society, with him on the other side.
I'm hoping this doesn't happen. As an ex-SSPXer myself, I know too well the different factions in play. These factions are mostly evident in their larger locales (St. Mary's, KS & Post Falls, ID) and barely existent in their smaller chapels to be honest, but they do exist and the infighting has, in my opinion, caused the spiritual destruction of many well intentioned souls. I've seen it.
No, I too am praying that the SSPX returns. It will be a huge boost for Tradition and offer many viable geographical options for attending Mass way over and above the current availability.
If Williamson leads his own schismatic group, I foresee him joining up with likes of the "Bishop' Kelly, the SSPV, and other branch SSPV breakaways. Personal differences may be put aside given the new situation. The SSPV, in other words, could very well get a huge boost and come out from oblivion and be the new frontman of "schismatic traditionalism".
The CMRI will continue to wallow in its overt sedevacantism.