Bella's Back Surgery and Medical Expenses

About 3 weeks ago, my brothers 2 year old dog, Bella, was attacked by a pitbull. Unfortunately, my brother was not home at the time and my grandma had let her out into the backyard as she always does. The gate was not closed all the way and that was when the pitbull got in. She was found by my grandmother because she was screaming out from the pain. When he took her to the vet they told him that she had broken her two back legs and the possibility for her to walk again became uncertain. My brother attempted to nurse her back to health but she also had two small puppies which he had to care for as well. Last week, my mother's friend was able to find a vet that would give her physical therapy and has been housing her at his office for $7,000 Dominican Pesos ($120USD) per week. This covers her feedings, boarding and physical therapy to see if she would respond to treatment. Today, the vet informed my mom that she has not been responsive to the treatment, which leads him to believe that she may have some nerve damage. He suggested an MRI to get a better look at what's going on. She is getting her MRI done this week and afterwards the doctor stated that she will most likely need surgery that starts at $60,000 Dominican Pesos (1,028USD). My brother lives in Dominican Republic, with not much means to pay for the surgery she needs in order to repair her hind legs. My family and I have come up with a portion of the money but we still are short on money. We considered bringing her here to the states, but an MRI for a dog costs $3,000 and the surgery would be at least $5,000. I know with the pandemic that is going on right now, it is not easy to spare any money, but even $1 would make a difference. If we don't come up with the money soon we face having to put her to sleep. Thinking about my brother losing his best friend breaks my heart because he wants to help her but cannot afford to do so. ANYTHING IS APPRECIATED and I will be posting updates on a weekly basis.