A bug in the story

I am a foreign player and the translation software may have errors in the input. I found a problem in the Cursed Witch in Chapter 6. If I had not taken the side quest and I entered the map again, she would not appear again and defeating the witch would not give me the green item to increase my spirit stats And the map at the beginning of chapter six has a tree spirit that's still highlighted on the map after how many times he's killed it

Have any of you ever had that happen to you or something else a witch who doesn't give attributes is hard to get together

This really affects the game experience