Update on this situation: the max level at this point is like 10, not 8. and I was level 9 at the time of the battle. but other than that, I just wanted to say that the main thing that bothered me about the boss fight was not the difficulty of the whole fight, but rather the ridiculous amount of damage she does with no warning in the final phase, especially considering you have no turns to prepare since you need to attack her for her to enter her final stage. The immense amount of damage she deals makes it so that defeating her at level 5-6 feels like gambling, just hoping that you land a critical hit, or that her bite misses. Some things I had in mind were a potential warning for the bite, or just outright reducing it's damage considering it deletes half of your max HP or more if it hits. Although generally the fight is fine: difficulty is good, and mechanics are great!