Help Mother & Son's medical expenses

On Oct. 31 2017 my family went trick or treating in Statham ga. As the night was coming to a end we decided to go get in our car and grab some dinner, we were at the crosswalk in between subway and the police station on Jefferson St. Well as we were crossing the crosswalk a silver minivan was coming up towards us from Atlanta hwy. Well the man driving the minivan wasn't paying attention. I looked back in time to see my wife Katlin push the stroller with our youngest son towards the sidewalk and try and push our 5 year old Kross out of the way but it was too late. My wife got struck by the front of the vehicle and hit the windshield then flew off and struck her head on the pavement. We don't know exactly what part of the vehicle struck my 5 year old but he ended being pinned on the arm by the back passenger tire. My wife was taken to Athens Regional where they found that she had a severely broken ankle that will require surgery, a broke rib, and a concussion and several knots on her head. My 5 year old Kross was air lifted to Egleston children's hospital in Atlanta. He's still being treated there and they're still running tests to determine the extent of his injuries. So far we know that he fractured his eye socket, has extensive road rash that might require skin graft, and they believe that the muscles in his knee are damaged. My wife was already out of work for maternity leave from our daughter Mia Kolbi that passed away and now she'll be out of work even longer because of requiring surgery for her broke ankle and her insurance ends next week because she only had pregnancy medicaid. We also don't know yet the extend of our son's injuries or how much his treatment will cost us all together. If you could help in any way it would be greatly appreciated!