If she depends on Medicaid for health care, then they have a limit on how many days in the hospital. Even as tiny as he is, she should file for social security disability for him as it will give her more funds. Even if he does not make it, they will pay her retroactively. I used to file SSA disability for all children in foster care with special needs. That extra income might just help out & she may be eligible for more services if approved. Some medical conditions are instantly approved. The hospital social worker should be able to help with this.
Marty