Seeing as Brontë spent a great deal of time emphasizing class inequalities, she took great pains to convey the disruption of this norm, in the form of Mr. Rochester proposing to Jane, as an extreme deviation, indicative of possible, future change. I could be reading too much into it, but it seemed to me that the substantial symbolism, on top of Jane’s complete disbelief, was heavily accentuated for this very reason.’
Before they even start talking about the pseudo-marriage, Mr. Rochester entreats Jane to notice the wings and eventual flight of a moth. As, earlier in the novel, Jane likened her station to that of one constrained by chains, the moth is analogous to the freedom she would obtain if she moved classes by marriage. Following this moment closely, they sit and allow their relationship to blossom underneath an old chestnut tree which becomes important by the end of the chapter. Almost immediately after Jane says yes to the proposal, rain arrives. Storms or rain is almost always used in literature to symbolize rebirth, a new beginning, In this case, it appears as if rain is not only there to usher in the start of a fresh relationship but also a society which permits class mingling. This idea is solidified when the storm causes the old chestnut to split, the same way Jane and Mr. Rochester did from their cultural norm. Out with the old and in with the new.