âThe Dursleys had everything they wanted but they also had a secret, and their greatest fear was that somebody would discover it. They didnât think they could bear it if anyone found out about the Potters. Mrs. Potter was Mrs Dursleyâs sister, but they hadnât met for several years; in fact, Mrs Dursley pretended she didnât have a sister, because her sister and her good-for-nothing husband were as unDursleysish as it was possible to be.â