fire
Bertha setting fire to Mr Rochester's bed.
the sexual desire Rochester originally felt for Bertha, the sexually attention she drew from the crowd of admiring men and all her affairs- all of this sets his bed on fire
jane extinguishes the literal flames only to kindle new ones of metaphorical kind.
symbolizes jane and rochesters sexual passion
Bertha takes her pyromaniac tendencies to Jane's bedroom
Bertha is objecting directly to jane's own sexual interest in Rochester.
also transferring her highly sexed nature to jane
Bertha using arson symbolizes her using the power of sexuality to destroy Rochester's home
could be because Bertha is Jane's alter ego
jane eyre
jane is fiery and a passionate character:controlling, against traditions, stuborn and feminism
she demonstrates fiery lust when she strikes John Reed
victorian audience would not approve women were subservient to men, they were not allowed to challenge them
she shows internal inferno when she yells at mrs Reed, exposing her staunch individuality
also when st.john proposes to jane she steadfastly refuses, citing lack of love as her reason
"but as his wife-at his side always, always restrained and always checked-forced to keep the FIRE of my nature continually low, to compel it to BURN inwardly.
rochester
he is considered to be a vulcan, which is a Roman god of fire, just as Rochester is the main male with deep internal and external passion/fire in the novel
willing to have an affair to quench his thirsty passions for jane
"no contract strikes the fire from you that is in you