It could end well though. A nephew who graduated with two masters degrees, one in music and I forget the other, took a minimum wage job at Disney running a ride "just because that was something he always wanted to do". My sister raised an eyebrow but sensibly remained quiet.
He's still at Disney, but not running rides, no sireebob. He is in management and it doing very, very well for himself and having a ball as well.
So it is not the end of the world for her and she is not condemned to a lifetime of poverty.
At that rate, you might as well cite a story about your friend that won the lottery, and didn't have to worry about their job making minimum wage at 7-11 anymore.
I'm willing to bet a vast majority of the people that start out as a full-time job working at Disney at minimum wage probably never move very far up the income ladder. And obviously there are more things to life than money - but it can be a very critical choice for a first job, as it can have far more far-reaching implications on future jobs as well, as I noted in my previous post.
It makes me wonder why she never considered this as a summer job, unless she had a job elsewhere, and/or was in summer school? What types of jobs did she have during the summer? (or even in the winter between semesters?)
You do have to be careful how you approach this topic to not drive her away but rather make sure she is aware of the financial realities...but at the same time, will the OP be feeling nervous/frustrated/regretful when the inevitable fiscal issue comes up that far overwhelms her $15k annual salary, be it a medical issue, or some other fiscal calamity? $2,000 for 3 car repairs over 8 months. $3,500 deductible for a medical issue. $350 to fix a speeding ticket. $1,200 for 3 plane tickets/year to fly home to visit the parents, since she obviously can't afford $400 tickets all the time.
The OP will obviously be the one bailing her out and likely making another financial sacrifice - so you have to also accept this reality, since it's highly doubtful you will let her suffer in misery when you have the financial means to help her out. And how do you tell her "I will only help you out for so long, or for $x, then you're on your own" - when it will likely be a long time before she's financially independent enough to not need the bank of dad?