Every week someone had a sob story. You know when it's about to happen: cue sad music, and a sad womans voice saying "Three years ago Angela here had a car accident, broke her back, lost all her hair, and then all of her family died in a house fire..."
Sharon almost always let people through who clearly didn't deserve it (ie. the boy who did the splits). What's wrong with her? It won't make her look evil to tell people they're rubbish when they are!