Her body was found in a stream the day after her disappearance ; she had been sexually assaulted and strangled .
Garben was a Detmold schoolgirl who disappeared on her way to a dental appointment .
Garben 's body was found in a stream the day after her disappearance ; she had been sexually assaulted and strangled .
Garben was a Detmold schoolgirl who disappeared on her way to a dental appointment .