I know this is old, but seriously what a great Dad you are! You didn't hand her money and you didnt leave her to flounder. You helped her in immediate ways she couldn't do herself like adding her as an authorized user, but also helped her long term by guiding her, teaching her, and establishing a plan. Plus, sharing your thoughts has helped many others.
If you recognize the account but believe the information being reported is not correct, you should reach out directly to the financial institution that reported the information. For example, if you recognize the credit card, but do not recognize the late payment - speak with the credit card company. Often the bank or credit card company can fix the issue and update the credit bureaus directly.
You've probably seen advertisements for credit repair on television or heard them on the radio. Maybe even seen credit repair signs on the side of the road. You don't have to hire a professional to fix your credit. The truth is, there is nothing a credit repair company can do to improve your credit that you can’t do for yourself. Save some money and the hassle of finding a reputable company and repair your credit yourself. The next steps will show you how.