Got some general tips for those interested in a safer way to beat her.
Stay around 1 roll distance away at all times.
~ Whenever she goes for her Paralysis Wave, she will give an audio clue. Dodge in middle or low stance (double tap dodge to be sure but once you get the timing, a singe dodge is all it takes) when the audio clue is over. After doing it once, you should get a better idea of the timing. After the Wave, you can always close the distance by dodging towards her once and followup with an attack (mid of low stance) or simply dash and strike. All weapons but the Axe can get 2 free, safe hits (the kusa low stance combo is not safe unless you know exactly when to stop). The axe gets 1. Dodge back once afterwards.
~ If she run towards you, she will either do the combo, umbrella combo, Wingspin combo or grab. whatever the case, dash away and left or right and wait to see what she does.
~ If she uses her normal combo, stay just out of range to see if she will do the final attack (a downwards kick). If she does, you can get a full spear, sword or duals heavy combo, 2 heavy attacks with the axe or 2 heavy hits withe kusarigama (low stance is a bit tricky here again, for me at least). If she doesn't you can still get 2 free quick hits on her (or one with the axe) before backing off.
If she does the umbrella combo, wait for a final blow where she puts the umbrella in front of her. Beware cause she can do that final move at any time after the combo is over so if she doesn't perform it, you take a chance by attacking. The umbrella causes paralysis too. Sometimes she likes to start the combo with this move, then attack twice and sometimes finish with it again. Generally it is not safe to attack her when she uses the umbrella (who would think umbrellas could be this dangerous?) cause at the first encounter, generally her two hits will stun and she will finish you off with the grab. Later, with proper paralysis resistances, it is somewhat safer.
~ Her Dive Attack (she can do it on the ground as well, the wiki is wrong there...) has her pull a backflip before charging. It is slower than it looks so wait for her to actually start flying at you before dodging. You can also block this one if it gives you trouble and you'll take no dmg (it may take away all ki, but you will recover before she does). If you dodge it, you can get 3 (or 4 if you feel you've got her timing right) safe hits with the sword, duals or spear but only 2 with the axe and 3 with the kusarigama.
~ If she does the Wingspin, either keep dashing away or, if you weren't already, backstep once, wait a second and back dash again. You can then attack her for a full heavy combo with all weapons but the axe (give her 2 only if you wanna be safe).
~ If she tries the grab, keep moving and it will miss (the reach is not good and it is rather slow) then attack till you see her putting her tongue(s?) back in the mouth before backing off again.
~ When she goes up, always hold block and wait. She will either give the audio cue for the Paralysis Wave or throw her shuriken.
Dodge the wave as you would if she was on the ground and simply block the shuriken (she throws 2 times, 3 shuriken each). If you have projectiles like kunai or shuriken (or can quickscope her like a badass) one or two hits will be enough to knock her down but if you want to play safe, you can wait for her to come down on her own. She comes down in two ways. Either a normal Dive attack (deal with it like you would a ground Dive attack) or a special variation if you are closer where she will stomp the ground and pollute the area around her, then do a backflip and get into position. You can attack once or twice here bu the recovery from this one seems faster than the normal Dive Attack (it doesn't look like it but I've been having trouble safely landing a combo on her after this one).
~ Whenever she falls down, beware. Don not pull more than one combo on her cause she likes to wake up with a stronger version of her grab.
Hope this helps.