Looking at it from an investment standpoint. Her being so young she could work her tail off and sock away a lot for retirement. With compounding interest over the decades it will grow to a tidy sum. She could still take off a year or more with her current enjoyable lifestyle or go permanent with it while her retirement investments grow plus staying out of debt. Just my opinion.
If, with every PR "gig" she's setting aside $10-15k and investing it in a retirement account then yes, she'll do fine when it comes to retirement.
I am skeptical though, and believe the thinking is more like, "I'm not going to worry about retirement because that's for OLD people, and the system is corrupt, and I could lose all my money in the stock market and besides...I want experiences not assets!"
And rather than saving money, she's jetting off to Bali and hiking in the Himalayas, in order to get Instagram-worthy photos of her "experiences."