Save my pets life

My cat and my best freind Ahry has recently started to have seizures and not acting like herself. So i took her to the hospital and vets , so i had to pay over $2000 for the tests to be done. I could only do her 2 tests as I didn't have enough money. Her seizures can lead to 2 or 3 different outcomes, one is Feline Leukemia which is 100% guaranteed fatal, which would make me breakdown into bits, or epilepsy which is EXTREMELY rare, but isn't fatal, or she will rub it off, but her current situation is really bad and I don't think her body can defend it. I'm waiting for test results and hoping for the best and treatment for any of the diseases are really expensive, about $1200, so i really need your help to keep out my cat alive for as long as possible. She has been with me for 5 years now, so she could miss out on half her lifetime. Any penny would help me and my family massively. Thank you for reading and have a good day!