she was definitely the biggest wall in the entire game for me and i struggled beating the rest of the game too but the NG+'s were a blast and i decided i REALLY like torturing myself and managed a Charmless run somehow. the game is simply you must memorize the bosses moveset,dance the dance, die a bunch, and have enough discipline to not have a meltdown when you reach stage 3 Genichiro and he annihilates you from stress.

i think i wildly persevered in Sekiro bc of the thrills it provides. may as well be on the worlds scariest fastest tallest roller coaster while fighting the bosses.