Answer:
her limited understanding of religious doctrine AND her very literal interpretation of Mr. Brocklehurst's question
Step-by-step explanation:
In this excerpt it is clear that Jane knows the correct answers to the questions because they have been drilled into her. However, it is not clear she actually understands that her bad choices and behavior will result in going to hell. When she is asked a question that she doesn't have an answer that has been taught to her, she uses her own thoughts. Her answer that she just shouldn't die would definitely keep her out of hell, but it isn't what Mr. Brocklehurst is hoping she'll say.