I've made frea the strongest character in the game by far

I'm on my first playthrough, legendary difficulty, vanilla. My character is incredibly overpowered, I kill most enemies in one hit. Karstaag could barely hurt me and I killed him in seconds. Just now frea started attacking me, i don't know why, and she killed me in one hit! (technically 2 hits but after the first hit I had a sliver of health left)