She finally realised that, what is the point of her going all out for the people who didn't even appreciate and thank her for what she did. Hence, she stopped running around. She began isolating herself, trying to find her true self and discover what truly makes her happy. Months after months, she still hasn't found it yet. The people who used to use her 'free service' began to worry but did not go out to search for her, not even ask if she was okay. She was dumbfounded to hear that but in the end, she still went back to running, for the people. She has been ignoring and pushing aside her own wants for so long that she doesn't seem to know if it really still matters. Running, was all she did. And running, is what she chose to do for the rest of her life.
Sometimes, you feel so tired. You don't feel like putting any more effort, knowing that it will only go to waste or very minimal use. Sometimes, it's not even because of yourself. You get tired seeing what others are going through. You feel them. Sometimes, they are quite a distance from you, but when you feel crappy for no reason, you can feel that they are going through it as well and you say quietly inside, "Well, at least we still have something in common. I hope this could lessen yours." You could lose your mind, sooner or later. For some, it has already started.