Foster puppy Jemma needs help!

Puppy is being fostered through Relief Animal Rescue. My foster puppy Jemma came to me after her breeder didn't want to treat her for parvo. I took over her and her 5 siblings care. Sadly, we lost all 5 of her siblings to this horrible virus. Jemma is the sole survivor. After many sleepless nights, she recovered. A couple days later, I noticed that her back legs were very weak. After bloodwork and X-rays, the vet determined that she was very anemic and her glucose was low so maybe she wasn't strong enough to walk. A few days later, her back legs locked and were unable to move. After a visit to a neurologist it was determined that she needs an MRI to diagnose her condition ($3-3500). We started rehabilitation and acupuncture right away and have made very small progress. I am asking for help in getting funds for an MRI so we can get a diagnosis and possibly wheelchair for her. We also want to continue her rehab and acupuncture which costs around $200 per week. She is such a happy puppy and she deserves a chance at a good life. Please help Jemma. Any help at all will be greatly appreciated. If you cannot donate then please share her story.