Save Roomie: Urgent Surgery Needed

Hello! I am Roomie’s mom; she is my hamster and my only companion. A few months ago, a bump appeared on her face; it started very small and has grown over time. It keeps getting bigger, and I have been to the vet several times for tests and medications, which have cost over $800 in total. The next step is a biopsy and surgery to try to remove as much of the bump as possible. The total is $1,300, which I do not have. Roomie means everything to me, and I really need help to be able to assist her. I can’t do it alone. Any assistance is greatly appreciated. Thank you very much!