I think Bartolomeo will come to Wano and his DF will play a big role , even against such monsters he can for sure not fight them but protect those who needs protection or need to gather haki again.
anyway i think BM will get paralyzed for some reason like either one cuffs her with see stone , she fells asleep or Hajrudin comes and tell her she ate Caramel or she gets her hunger pangs.
I can see some stall her like Kidd , Law , Marco , Jinbei , but it will not be more than stalling no one of them has the power to go with her toe to toe .
right now to be honest it seems that Luffy is the only who has good haki enough to hurt those monsters . but who knows I think Law powers will play a great role especially against BM in her unstable state , he can just teleport her to the see or teleport see stone to immobilize her. to be honest i have the feeling the BM will get nerved again