Help my cat Nala

Hi my name is Deborah and I have a cat named nala who has cancer, I had taken her to the doctors last week cause I noticed a huge lump on her stomach. After taking her, the doctor analyzed her and found a very aggressive type of cancer so they want us to to do an ultra sound and then a surgery to remove the mass which she said costs around 4,000. If it’s not done sooner it could spread and we would have no choice but to wait for her death (which is 6 months to a year) or put her to sleep. she is very special to me and my family. She has been with me since I was a little girl and means the world to me and I can’t bare the thought of not having her in my life I ask anyone out there for help it would mean so much to me , thank you and God bless ❤️