Melissa Andersen has a Masters degree in Social Work and a Bachelors degree in Sociology. She administers one of Hamilton's many homeless shelters. Although many have tried to put more than a few scams past her, no one has managed to succeed. Behind her kind facade is a scheming mind who knows how and when she can best bend the rules to gain the greatest amount of benefit for her charges.
Nicky Dingo made her acquaintance one evening when a drug addled resident tried to sexually assault her. Nicky intervened because "she looks like my Mum". He has not formed a mother-son relationship with Melissa be he willingly volunteers to assist her when he can.