if you need an argument, one would be that although her deeds we're good, they sometimes got the better of her. Once, when she was twelve, she spotted an overseer about to throw a heavy weight at a fugitive slave. she stepped between the two and was struck with the weight on the head, which cracked her skull and left her bleeding and fainted. as a result, Harriet suffered from hallucinations, headaches, vivid dreams, and narcolepsy the rest of her life, making her unattractive to slave buyers and renters. I hope this helped. I couldn't find anything really negative to make an argument so this is what I come up with. good luck!