Leia's cancer treatment

Around 3 weeks ago my baby girl Leia was diagnosed with cancer. Specifically a mast cell tumor on her lower back above her tail, which is basically the equivalent of having Melanoma as a human being. I've taken her to multiple vets before I left, and we have help at home who have been taking her to several appointments around the state. We've found a specialist who has moved her ahead in his schedule to this week now! We have footed the bills thus far but we're at a point where we need help. She is still very young and deserves a good long life. She was abused, abandoned, born with defects, and we rescued her and got her surgery that lets her run and jump and climb like a normal puppie. She's had such a hard life. It breaks my heart. We've had her for 5 years and I love her like shes my own child. PLEASE if you can, help Leia. She is literally the sweetest dog on Earth and anyone who's met her will tell you that. Please please help if you can. We've are running out of time.