You aren’t asking her to make 25K between now and her enrollment. She needs to NET 25K which is an entirely different animal. Social Security off the top. Federal, state taxes. Commuting costs. Brown bagging her lunch every day. And fantastic if her job offers benefits-- but guess what? Those will be automatic payroll deductions as well.
I think you are living her fantasy by thinking she can bankroll USC on her own. And have her work through a loan repayment schedule to see what her payments will be. It’s going to take a lot longer than 10 years to pay off a 60K loan on a 60K GROSS income if-- like most kids- she doesn’t want to live at home after graduation.
Does she have any clue what stuff costs? Real stuff- health insurance, deductibles, copayments, rent, taxes?