Answer:
Mr Rochester’s courtship of Miss Ingram. Bronte presents to us that Jane has not yet realised her self-worth. Contextually the society of 1848 would have negatively viewed the marriage of two individuals from different classes, so Jane’s jealousy is emphasised through society’s expectation of Mr Rochester to marry Miss Ingram.
Step-by-step explanation:
In her jealousy, Jane imagines a past love relationship between Grace and Rochester; perhaps Grace's "originality and strength of character" compensate for her lack of beauty. Jane doesn't think Rochester is overly impressed by women's looks; for example, Jane is not beautiful, yet Rochester's words, look, and voice on the previous night indicated that he likes her.