Autism / Autism Spectrum Support Group
Autism is classified as a neurodevelopmental disorder which manifests itself in markedly abnormal social interaction, communication ability, patterns of interests, and patterns of behavior. Although the specific etiology of autism is unknown, many researchers suspect that autism results from genetically mediated vulnerabilities to environmental triggers.
Based on what you said you have to follow up on this, either with her Pre-K teacher or DHS. Even if she's non-verbal they have ways of questioning a child and you should be present to protect her. If what you're saying is right then do not make her see him any more .