Except that earlier she was shown to have basis Coc, not Advanced. Back in the 950s, her sword and Kaido mace touched.
And I trust I don't have to explain why back in DR not only Fuji didn't fight seriously, but adv. Coc was 250 chapters distant from his introduction. But let alone adv. Coc, even Ryuo, hell even FS was not a thing back then.
So, like I said, BM has it and nevertheless we didn't see any effect of the sort in her serious duel, let alone this passing pseudo-confrontation of two pages.
Maybe they have it, maybe they don't. I don't know, but have to wait for the Sabo fight at the very least.