Not all records can be expunged - it depends on the offence and the state. The best way to find out this information would be to type "expungement" plus the name of your state into a search engine and follow the links given.
How Do I Get Rid Of My Criminal Felony Record By Doing So My Self At No Cost So I Can Have Clean Background Check When Applying For A New Job?
Ditto, Wordy, Housecat may even need some legal help, depending on the offenses and the state she is working with