This is an easy but precise way to defeat Shadi. Attack her until you hear a large "clank", which indicates that she has blocked. Then, roll to the side of her. When this is done, most of the time you will be able to get behind her and repeat
the attack. You should get to hit her about four times (and possibly up to six times) before she blocks. However, sometimes you may only hit her about two times before she blocks. You must listen for the "clank".