Changing her clothes to a ballgown every time she left work so she wouldn't be mistaken for a worker. Leaving one of her uniforms in a cafe.. Having a degree in a course that didn't get one work that payed to the level one had become accustomed to as a kid going to Iona. Breakup with boyfriend. Family just moved to Kalgoorlie leaving her behind. Weird phone call telling family about being followed and how scary that was. These are all jumping out as cry's for help. IMO
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Or changing her clothes to an evening gown because there was a staff function that evening, working at a job that fits in with uni which is why she didn't go to Kalgoorlie. Made phone calls because she was being followed and frightened. Also there was at least 1 SM group that met at the Parmelia Hilton maybe someone had an obsession about her.
Just a possible alternative scenario.