Young girl needing a box wheelchair

Kendall is a kid that is in a wheel chair but wants to be like other children that participates in sports. She lives in an area that doesn't have any adaptive sports. She has been on a wheel chair basketball team and we would have to travel two and a half hours away every weekend. We wanted to try out WCMX in Texas. Last weekend she participated in the WCMX World's Championship and she came in 5th place in the beginners division. She absolutely loved this sport. There was a vendor that was there to fit people with disabilities for a type of chair for this sport for the durability but also to use as a daily chair because of how much lighter the chair is for independence. She actually got to use one of these chairs in the competition and she couldn't get over the difference in weight when she got back in her own chair.. The Box Wheelchair is going to be around 4500 to 5000 and the insurance will not pay due to this company being out of network. Also there is another WCMX event in California. Kendall made many friends and these friends have been doing this sport and traveling to the same events for years. We are hoping to have the opportunity to take Kendall out to California in July but can't do it without help. All the traveling that we have done already is getting pretty expensive and now we need her to get this type of chair. Please help