CPS and X

A report was called in to CPS that said when my grandson spends a weekend with BioMom (known around here as B3), she leaves him alone with his 10 month old half sister and he babysits and changes her diaper. X is six! X confirmed the report, B3 denied it. CPS isn’t sure they need to follow up. If I was physically in Michigan, I would probably be in jail on charges of assaulting an the idiot. He goes with her again Friday after school. I am leaning towards hiring a private investigator to follow her around all weekend.

Anybody saner than I am have ideas that are more productive?