From 15 to 2.5 (~80% reduction) that's a massive axe. She's still useful because of the equalization through the heal block, she doesn't "heal" through the block, and her massive health. But didn't have much difficulty winning against her in the first place.
Why was the heal part cut so drastically when the heal from invigorating strike was only a 40% reduction?
How about 15 to 7.5, or even 5, but all the way down to 2.5?
Or how about restoring invigorating strike to 5/10 since it's not guaranteed?
How about another opportunity or 2 to farm shards for her so she can be upgraded a little quicker now since she's been axed...I mean balanced...lol
Also, the update says she outperformed nearly all, which means she wasn't the best at all, so the drastic reduction seems too much.