I really hope the author is not trying, for real, to make the teacher just a clumsy, misunderstood person. There's a limit to how bad she can be, while still supposedly being wise and experienced beyond measure. Not to mention she would have seen the results with her own eyes, yet never did anything differently. Now she's falling even to the cheapest of self-deceit tricks of accusing someone else for her own mistakes, just to make herself feel better. The (fake) hero party merely was able to treat Lloyd like a disposable servant because the teacher had destroyed Lloyd's sense of self-worth. It's all 100% this master's fault. She has a wicked personality, plain and simple.