Help get Abbie get a wheelchair van

Hi my name is Abbie, 4 yrs ago I incurred a Traumatic brain injury as a result of domestic abuse at 2yrs old. The left half of my brain does not work and due to this I have very limited ability to move my right side. I am now 6.5 yrs old and I am over 4 ft tall and getting to heavy for my mom and grandparents to keep lifting into a car seat and moms car is very hard to get into and out of. We have found a wheelchair van ( through a organization that helps people like me) that will assist my family to transport me to my many different drs appts ( some even in Boston). Mom doesn't like to ask for money but we are $4000 dollars. Any and all help would be very appreciated.