I am quite happy with this nerf, I am not sure that /much/ more is required.
The less hp she has, the sooner she is running away and self healing. The more self healing and running, the less CC is being done.
This will help push her to the back of the line and make her nearly incapable of fighting off a whole team… which she was able to do previously.
Add in some cool down changes to make her more of a burst high risk CC and she would be perfecto with little impact to her kit.
So what if she does massive damage… make her afraid to do it.