I agree that you need to retain a family law attorney immediately. If there is evidence of the bruises from the hospital, you need to obtain copies of the medical records. This sounds like a complex and urgent situation, so I would advise you to retain counsel as soon as posible.
I agree with my colleagues; you should hire a family law attorney. It is often difficult to prove that a child is being abused, especially emotionally abused. From what you are stating there is evidence of physical abuse that has been documented by a hospital and the police. I am not sure why CYS determined that the reports were unfounded. Besides finding a good family law attorney, you may be eligible for services from the Bucks County Network of Victim's Assistance ("NOVA"). Here is the web address for NOVA: www.novabucks.org If you contact them, they may be able to give you some assitance and guidance.