A probation officer has an extraordinary amount of discretion when you are under their supervision. The answer, of course, depends on her history of compliance and the underlying crime of which she was accused. In many cases, they will simply ask for tighter conditions of probation. They can technically ask for her to serve out her suspended sentence in prison. If this is her only violation, full revocation sounds a bit extreme. The recommendation of the probation officer at her revocation hearing and the argument made by your wife's lawyer are the factors to be considered by the Judge.