Explanation video :    • Princess Theradras Solo Run Lvl 50 Dr...  

Here is the actual run. I should note that while I didn't encounter it here, I have had issues with her evading and hp partially refilling but usually I still get her down without issue.

Edit: The evading hp regeneration seems to happen when I'm on the wall too long (like if she throws a boulder at me while I'm up there), if I'm on the wall without line of sight on her, and if either one of us hits each other while I'm on the wall. So be careful to avoid these situations if you want to keep your kill time low.

Also I recommend swiftness potions for emergencies when she gets close and cat sprint is on cd.