From FALLOUT: A Survivor Talks to Incest Offenders (and Others) by moi:

Family of origin members do not want to believe the perpetrator is really a “sexual pervert,” They want to believe that it was a fleeting anomaly and and that after treatment and/or incarceration he is his “old self” gain.  They will often send their own child off for a walk in the park with the perpetrator in order to reassure themselves that their family member is trustworthy once again. Red alert! Red alert!  This is an extremely dangerous tendency. Do not put any child in harm’s way as a test!  In their deterination to reassure themselves that their beloved transgressor is really a regular guy, family members may cooperate with relapse prevention plans on a a temporary  basis  only,  not a life-long basis, as is required if re-offending is not to occur. One offender who had been in treatment lived acrss the street from a playground. After his release his wife confided that she was not letting him go over to the playground “yet.”….[Unfortunately, there is always the risk of re-offending]. (p. 118)