I am sorry to hear about what happened to Juicy. I am a veterinarian and will do my best to help.
It sounds like she has a broken leg, or possibly a broken pelvis. That is painful, and can have complications, but usually is not fatal.
I am more worried about the urine being red, and now brown. It is possible her bladder ruptured when she got hit. That could cause her to die, if that is what happened.
It is heartbreaking to think of her with a broken leg, not getting anything for pain, and if her bladder is ruptured, not only is she painful but she is in danger. You need to take her an animal hospital right away. You can't help her at home. If you don't want her to die, you need to get her to a hospital. I am a veterinarian, and I could not help my own dog with these injuries at home.
I hope the red and brown in her urine is only from trauma and internal injuries, not a ruptured bladder.
Here is a website that lists places that can help with vet bills:
Let me know how she is doing. Rebecca