So the thing with Salesforce Admins, is its a sub-career within IT that requires minimal technical knowledge to be good at, plus by the nature of the job you end up working with vendor support, so if you're really not good at your job you can simply pass everything to the vendor to do and just get paid to manage the projects and pass them between the business and the vendor.

I worked with a Salesforce admin who did exactly this and he collected a crazy salary for about a year while his boss tried to convince his boss's boss to fire him for not being able to demonstrate the skills that his resume implied. I also later learned that he was also working at his brother's Salesforce consulting firm at the same time, so extremely unprofessional and a clear conflict of interest.

Anyways, my point is, I'm not at all surprised that your sister who sounds like they're kinda disconnected from reality works as a Salesforce admin. That's just the aura that some Salesforce admins give off!