Thank you for your feedback and for playing it! I really appreciate it!
The standing still is actually a feature to make the battle a bit easier. It's supposed to function like a stun mechanic, meaning once you've dealt enough damage she would stand still for a few moments, but for now I made it random so that the fight is a bit easier. It looks broken because Edith currently does not have a resting animation, so when that gets taken care of hopefully it becomes a bit more obvious what the player is supposed to do.
As for not taking damage from her, that was also something intentional that I did for the time being, because I found that it became very hard to deal damage to Edith when touching her dealt damage. I'll probably increase the sword hitbox in a future update to solve both problems.
I like the idea behind your attacks, and I do plan on implement more attacks for Edith and the Slime. I want to add some form of aerial combat, so look forward to that in the future.
Also, may I ask how it felt to control Nox? Did the game feel too floaty or too rigid? Was it obvious how you were supposed to navigate the menu? Also, how easy/hard were the Slime and Edith fights?
Again, thank you for taking the time to play my game! I post updates on my twitter, so follow that to know when the next update is.