She says 7C+ on Insta.
Don't think Mina's done 8Bthink your grade cut off is a bit high if you want a comparable list to the men >=8B, 7Cish would be closer to the mark I think
Rachel Daly has done Not Bad Dave, Ash Tree Wall and Hell Boy all at 7C, not bad in her first 2 years of outdoor climbing! Dropped the finishing jug on a 7C+ recently too..
Grand Opera is easier than Ben's in my opinion but I haven't done ben's with the knee and grand is easier if you're tall. Does that help