In a story, you were allowed to be wracked by feelings too terrible for reality to hold. If Rae showed how furious she felt, she would lose the few people she had left.
This is so real. Sometimes, reading about a character even just reacting to something in the way you wish you could react to whatever is happening in your own life is like a form of release. You get that feeling out and work through it under a different name, in a completely different scenerio, and with none of the consequences. Reading really is therapy