You may be able to take legal action for neglect. At the very least, you can file a grievance that will hopefully, potentially, make her lose her license.
I have done childcare in many environments (preschool, babysitting, daycare, afterschool child care, camps, etc) and with the ratios that you are describing, this should NOT have happened. That kind of injury does not happen when you are actively supervising children. And children that age, should ABSOLUTELY be ACTIVELY supervised. This truly sounds like a matter of neglect and/or incompetence to me.
Secondly, I find it unfathomable that they would
a) not watch the children at nap time to see that children are CLIMBING first, and BITING second!!! Where were they?? That is just insane!
b) continue to care for a child who is putting other children in such danger. Biting is a serious offense. I know and understand that it is developmental, but from all of my various child-care experiences, daycares will OFTEN refuse to care for a child who is endangering other children with extreme violence and/or biting. It is NOT uncommon to refuse to care for a child in that instance.
I don't know where you live, and I am not licensed, but I do come with references and a background check... I wasn't in the market for a job or to do daycare, but I would be glad to help you out in the meantime if you wish. We could negotiate a price- that isn't an issue for me, I would just like to help. I'm in Elgin. I would be happy to care for him in my home; I also have an 18 month oldd (almost! Nov 15 baby.)
In the meantime, I would do whatever necessary to gather information (get an incident report from them- this should be a requirement by the state and they must give you one that is dated and signed on their letterhead if they have one.) I would contact a lawyer. I would NOT under ANY circumstances send him back to her/their care.
Big hugs. Poor poor baby!!! (This just infuriates me if you can't tell!!! I'm sooo sorry this happened!)