Poor Eponine. She has the Thernadiers for parents. She doesn’t even have a transformative supporter figure. And yet she is still able to become a good person. Her action to stop her dad from robbing the house shows true selfless love. It wouldn’t have hurt her personally. In fact if it scared Cosette away it could have benefitted her. But it would have hurt Marius. And she takes her father’s wrath to do it.