like "just attack" you need to left click at the exact moment she will hit you, it's less easy than attacking because you will remember your own attacks patterns more easily than hers, from what i've seen there is no mistake frames meaning if you click early the game won't prevent you from clicking again when she touches meaning you can smash the left click especially her triple shot that is weak and easily dodgeable unlike the quick shot
also for the grappling special moves you need to watch the cue, click and draw a line in the indicated direction (it varies) but it's hard to do, you can still defeat her final form easily, just use your mp potions early two times, make sure to stay around 200HP and when she makes you orgasm use your (M)HP potions to restore full life
last but not least when she blinds you or make diversions (ruining your upcoming turns) is the right moment to use your potions thus the importance of using mp potions early so she wont interfere
also scat content needed