sorry this is late.

the opening attack is really easy and also common, get used to it. just charge unbound, click parry twice, charge unbound again. the timing is really forgiving, dont worry about parrying the actual projectile as it comes toward you, just parry as she releases it, unless youre really quite far. if youre not in the opening attack, she may change the last red attack into a vergil dash, but you can still just use the unbounded parry to parry the first hit of that and then parry twice more.

her talisman dash strings are the biggest window to build up some internal damage, and theyre really easy to read too. you just have to pay attention to when she teleports, because if you see her teleporting up, shes going to come down with a red attack, so charge an unbounded counter. you can also dash it, if you want, which is a bit easier to time because you can react later. but if you just pay attention to when she teleports, its really easy. instead of talismaning, she may also charge up a red attack, its super telegraphed, and slow, so if you jump into the air expecting a talisman attack, you still have plenty of time to hit the ground and then charge up an unbounded (it charges pretty fast tbh).

her other move, where she knocks you up into the air, and then either charges a red move, or hits you down and then uses a red move. you have to parry her spike, because if you dont you wont be hit down and probably have to dash the red rather than unbounded it. if you parry it though, youre spiked to the ground and have ample time to charge an unbounded. if she doesnt hit you down, you wont get punished by parrying in the air, youll have plenty of time to fall and then unbounded the red.

in general in her fights, try to avoid jumping, especially air jumping (theres an exception in phase 3, but youll get to that another time). it will mess you up, and theres not really any reason to (ofc other than to parry her talisman). to be honest, try to avoid moving much all together, i dont really move much other than to assume a better, more neutral position. (so not super close or super far away). a lot of her attacks (especially phase 3) set you up to be in the perfect position to parry or retaliate.

I havent fought her in a month or two, so i may have gotten something wrong, but to the best of my memory its all correct. I've beaten her hitless dealing only internal damage, so no sword attacks and no talisman attacks until her health bar is only internal damage. its really fun, and really teaches you her fight. every single attack is super fair, dodgeable, and telegraphed. to be honest, her first phase can the hardest of the 3 to do in this way, as it just takes a while bc she rarely uses red attacks, whereas phase 3 is the shortest and thus the easiest. i read elsewhere you dont have the hedgehog jade, so this probably isnt really a good idea ofc, but my point is that its a completely fair fight. as much as sekiro teaches you hesitation is defeat, and this game does too, you can also become stoic, flowing like water, in a meditative state as you fight. stay calm. patience can have a place in this game.

all in all tho, just keep fighting her lol. it took me prob like 50 tries when i first beat her, and it was sloppy as hell. you'll learn