Help Save Bella

On Sunday my 7 year old baby presented with some unusual behavior.  She was not her chipper old self.  She was lethargic, would not drink or eat, and only slept on the cold floor rather than in the bed with me, as she has since she was a baby.  A visit to the vet showed kidney failure as well as liver failure and a heart murmur.  They immediately sent me to the emergency vet clinic to have an abdominal ultrasound done.  Due to COVID, they did a curb-side pick-up and about an hour later came back out and told me that she needed $3823.18worth of testing done just to see what exactly was going on before she could even get treatment.  I am a single teacher with no means of paying that.  This is my baby and my heart is torn to pieces right now knowing that I have no choice but to either ask for money so that they can find out what is wrong with her and try to save her or put her down never knowing if she could have had many more years with me.  I have no kids, and with COVID, I don't even get the joy of seeing my students in person, so my Bella has gotten me through some of the darkest days. 2020 has taken enough from me and I am not sure if I can take Bella being taken as well.  Any amount would be beyond helpful and would instill my hope and faith in the kindness of the world. 
All the funds would be used on vet costs only!