Legs for Nimble

Nimble is a chihuahua Pom mix that was brought into this world with a rough start. She was born ( emergency c-section) with partial legs but as she got older her legs became necrotic and started to fall off. Her mother pushed her away because of her disabilities and had to be hand raised. Shes a survivor though, through all this she fought for her life, but has left her with only 1/3 - 1/2 of all four of legs. My goal is to get her a cart for the front legs and prosthetics for the back legs, but taking her to a specialist and getting her the necessary doctor appointments is going to start building up and I can't do it alone. 
She has so much spirit, so much love, I had to adopt her because hearing that someone was going to end her life because of her disabilities, I couldn't let that happen. She has brightened up our home, I just want the best quality of life for her, and getting her these special "legs" would allow her to be more mobile and able to get around better. I see her favore her little nubs and having the proper equipment would truly help!