You know, it's quite possible for a 20-year-old to still be a full-time student, in college, without their own income, and dependent on their parents. I mean, yeah, a lot of us students get part-time jobs to help defray the costs, but the $3,000 I make a year at the tech desk isn't going to cover all that much of collegiate existence.

I haven't RTFA, so if it actually said she wasn't a student, this doesn't apply. But I'm 22, and not (much of a) slacker, and my folks still pay for my cell phone.