It occurs to me that perhaps the hospital did not know she was pregnant. When I was 6mos pregnant with one of mine it was easy to hide. i didn't even wear maternity clothes. If they knew I can't help but think they'd have a social worker at the hospital before she was released.
Does she get prenatal care? Have those records sent to the doctor monitoring her pregnancy!! he needs to know. They need to monitor the babies growth etc.
If you can't find a lawyer that will make things happen fast enough call Child Protective Services. Take emergency leave and then call them with the intent of doing whatever it is you need to do. They will help you keep your child safe (help find daycare, help with making plans, help with making plans for your newborn, they may know of services etc.,) but if you do not follow their recommendations to ensure safety, they may take him/her to foster care.