Answer:
A good woman made angry and mean by slavery
Step-by-step explanation:
These adjectives, namely the ones utilized in the excerpt, "..eventually became red with rage;that voice made of all sweet accord, changed to one of harsh and horrid discord;" give the impression that Auld was nicer, yet was turned cruel by slavery. While it may not exactly by the correct answer, as I am not too knowledgeable on the Frederick Douglass narrative, but it most likely is somewhat similar.
I hope this can help you!