It’s because she cares, not simply because she is compelled by moral duty but also because she couldn’t abide by the thinking of the people around her who simply don’t care at all. However due to the socialization process she underwent, she doesn’t realize her own subconscious biases towards the 86, and that she lives peaceably far removed from the’86th district’, and thus is personally distant with them, and doesn’t make much effort to get to know, acknowledge or remember them. It’s a common phenomenon in humans, it’s simply that her biases are merely milder and more tempered due to her personality and beliefs