Perjury discovered after the judge made his ruling, what can be done?

I found out that during a sentencing for drug dealing/possession and counterfeit money the defendant lied her way through everything, and the prosecutor was not prepared due to the original prosecutor needing an emergency leave. I have a lot of proof of lies that she said during her sentencing, many come from another trial she had where she swore on oath that certain events happened and then contradicted all of that to make her criminal charge look good. Basically, she has been abusing drugs for years, in rehab a few times, been caught stealing from employers, and she testified that she was an A citizen until she was with the wrong crowd on one night that wasn't her fault. She manipulated the judge and befriended an old man who testified for her. She got probation, can anything be done?