She was defeated handily by both Yhwach and Aizen to elevate their statuses as some of the most powerful characters in the series. To call her confrontation with Aizen a battle would be a stretch ...
While Yhwach and his Wandenreich are the big bads ... own who has become one of the biggest threats to the afterlife. Aizen might have been defeated by Ichigo Kurosaki years ago but that doesn ...
Since Yhwach has inherited the power of the Soul King and now has the ability to change all of reality, the Soul Society has quite the hill to climb with only one final batch of episodes remaining.