The color red also symbolizes the avalanche of tempestuous emotions engendered by the injustices in the Reed household.
Jane, of course, is the target of such injustice. As she contemplates her predicament in the red room, Jane reveals the depth of her turmoil, anguish, and mortification.
For her part, Jane is burdened beyond endurance. Her cousins, who exhibit any number of seemingly crude behaviors, are cherished, indulged, and praised. John, the eldest, torments the animals and mistreats his own mother. Yet, he is revered and given every privilege a young boy could ask.
Meanwhile, Jane, who strives to please, is treated with contempt and disregard. She is marginalized, persecuted, and abused on a daily basis. When she tries to protect herself against John's blows, she is subject to "general opprobrium."
The scarlet furnishings of the red room complement Jane's tumultuous emotions and indignant, righteous anger at the treatment she is subjected to. When Mrs. Reed consigns her an extra hour in the red room, Jane loses all semblance of control. She is terrified that she will be visited by Mr. Reed's ghost.
For her part, Mrs. Reed is not at all sympathetic to Jane's predicament. The ugly atmosphere in the home is perfectly encapsulated in the red room: Mrs. Reed and her children are responsible for all of the horrors that Jane has had to endure in the household.