Although the hospital doctors had tried their best, basically, their mother was too late to get the treatment. Jack and Marcel were too late to bring their mother for treatment so the cancer had already become malignant.
Jack felt very sorry because he only dared to appear in front of his mother at the last second before the full of warmth woman left them all for good. Even, Jack had told his mother and grandmother before that he would fight and make them happy. But he had broken the promise in the middle of the way. Instead of being happy, he made his mother go away with a broken heart.
It really hurt when we are too late to keep our promise. The most torturous thing is a sense of regret.
