Proxima is the daughter of Iskra, the dragon that had led the wind clan into the service of the Stormcatcher. She was born when Iskra had fallen in love with Fyre, believing that he was "her past love" from her life before being exalted. However, in exchange for betraying the Stormcatcher, Fyre took Iskra's place. Proxima heavily resents her mother for this.
Much like her father, Proxima sees herself as a better fit to the values of the Light elementals - but knows she will always be caught in the crosshairs of her mother's mistakes without opportunity to find herself.