There are many maalos to having stayed on the right path the whole time, rather than indulging in the teenage years.
Just because she straitened out doesn’t mean everything is great. You don’t know what nisyonos she might have today as a result of the time she spent chilled out.
From experience I can tell you that in the long run, you save yourself a great deal of heartache by staying straight the whole time rather than taking curves.
A tzaddik gamor is lechatchila. A ba’al teshuvah is bdieved.