I had a similar situation (institutional childcare though) in which the ratio was 1 provider to 12 toddlers. My poor son had been there less than a month and was coming home with deep scratches on his face and neck...he ended up with scarring on his neck that took over a year to go away. Ofcourse the provider never saw anything! A week later I pulled my son out of there and never wanted to even look at it again. This is your baby, he is being assaulted on a daily basis? It is like you having to go to work where you are terrorized everyday. How long could you continue like that? It sounds like the said provider is close with the perpetrator and the mother, I would just look for care elsewhere for the safety of your child and call it a day.
