This quote suggests that the person referred to, "she," made every effort to endure a challenging situation. Despite her best attempts, she remained in that state, possibly trying to salvage or improve the circumstances. However, once she reaches her limit, her breaking point, she will leave permanently, indicating that her patience or tolerance has been exhausted. At that point, there will be no turning back, as she will have made a firm decision to move on from the situation entirely. It emphasizes the idea that she has done everything within her power to maintain the situation, but eventually, enough will be enough.