The quote describes a transformative moment in which the character gains clarity about herself, akin to dust being removed from a glass surface, allowing a clearer view of reality. This metaphor suggests that prior to this moment, her understanding of herself was obscured and unclear.
As the protagonist reflects, she becomes more aware of her identity and circumstances, signaling personal growth and insight. This realization may also indicate the shedding of past misconceptions, leading to a deeper understanding of her life and choices.