Are you and your mom absolutely sure you don't have at least $100-150 lying somewhere for the vet? Is there a gaming console you can pawn or sell? Any friends or family who can loan some money? I find that in desperate times, many people somehow finds the money when they really wanted to, rather than had to. I had come across folks who claim they can't take their sick cat to the vet but they can very much afford the new iphone or 4k tv. Or they can't get their dog's much needed surgery because that would require sacrifice of something that they value more than their pet, like a gaming console. I hope you know where I am going with this. It is time for tough love. Take it to the vet or surrender it to a reputable rescue. Treating at home is NOT an option.