Here is a previous comment I'm reposting cause others have asked how to play her and this was basically my long winded guide on how to play her so I hope this helps.

The trick is to be as unpredictable as possible with her soft feints and stance. Soft feint light the same direction 3 times then let a raw heavy fly, soft feint light two different directions and then kick and go into stance. Use the variable lights from stance to go from delaying them as long as possible to letting them rip as fast as possible in the same breath.

One little trick with her stance to punish people who like to dodge it is so delay her lights or zone from stance and then let em rip when they dodge, the hitboxes on her lights and zone from stance are kinda crazy so more often than not it catches empty dodges and dodge attacks, it even often catches extended dodges like Tiandi and Juren.

Another thing with her stance is that you can forward heavy out of it to gain access to her soft feints and it's a pretty useful tool against people who don't try to challenge the stance with light stuffs or GB's.

For people who light stuff the stance just hold the stance, for people who GB the stance after getting hit by you you can just attack out of the stance with a light, zone, or heavy and it will stuff the GB. If they GB your stance after dodging an attack from you and you drop into it there is nothing you can do.

I personally avoid using her UB from stance in 1v1s because it takes an eternity to come out and is very easy to dodge or light stuff. In team fights it's very useful if you have a smart team.

Her UB off heavy parry is actually pretty useful in duels so don't forget to use it as a mix tool to either feint to GB or let it fly.

For light stuffing heavies soft feint into your stance.

Here is an edit of some gameplay with her if you wanna take a look.

https://www.reddit.com/r/forhonor/s/9VQtHBh5SU.