I Don't Know What to Tell You

Last night the nephew came to me with a situation.  He informed me that the young lady who caught a charge for had visited his job.  He went on to tell me she spoke to his current girlfriend.  She told the current girlfriend she lied about the whole situation with the nephew.  He asked me what should he do about it.  I told him he could talk to the young lady and see if she would be willing to talk to a lawyer/judge about the truth to try and clear his name.  I also told him it may be too late because the damage has been done.  I don't know what to tell him.  I have never been in a situation remotely close to what he is going through.