It may well be correct. Parole is an alternative to incarceration - i.e., a lower level of supervision in which you are allowed to prove yourself. Your girlfriend is in this position. As a result, Parole Officer's have very wide discretion to direct a parolee's life. Her attorney should be looking into this for you, as my colleague attorney Meaney suggests.
Typically, there are conditions of parole/probation which may include no contact/association with a known convicted felon or criminal. Your situation would be somewhat different since you are married and not just cohabitating. I suggest that you follow the sound advice of my colleagues.