Sorry it took so long for a reply.
Yuzuriha is a hybrid of a stance, spacing, and zoning character. Her specials leave her in stance after using one of her specials and can be followed up with any other stance move. You have a stance move for each attack button(A,B,C) And while you hold one of these buttons down, you are locked out from using that button and can only use the other once. You can press the D button to cancel your stance back to neutral state.
If you want a more comprehensive guide, check out this write up I made a few months back. It has her basic tricks and tools that are kind of essential to playing her properly, as well as a few combos listed: https://docs.google.com/document/d/1Kce_msIGnnwr5Z9kCIfaMBjgDMF3vrrPi2mxndNfHNc/edit?usp=sharing
She may seem daunting at first, and to be blunt, she has a very high skill cap so I wouldn't really recommend her for beginners.