HELP Save Mocha or she’ll be euthanized in days

Hi everyone, I am seeking ANY type of help to go toward my cats Ultrasound and surgery. Mocha has a sad story, she’s a 10 years young Ragamuffin and I recently adapted her from another family. They had her locked up in a basement for over a year. They never took her to the vet for any checkups. Soon after I got her she had an asthma attack, and is now diagnosed with asthma. Then, a few days ago, Mocha stopped eating, drinking and was vomiting clear liquid bile. She was brought into the vet and given fluids and nausea meds. The next day (yesterday) she still wasn’t eating or drinking and was hiding being lethargic. Mocha went to the ER again yesterday and did a full blood panel and an abdomen x-ray. She has a big mass pushing against her stomach causing pain, and has actually turned her stomach vertical. I brought her home and they gave her a 3 day pain injection so she wouldn’t be in pain. At this point she needs an ultrasound and surgery! I have spent $1,500 on her medical bills this month already. I NEED HELP! MOCHA NEEDS HELP. If I can’t raise this money within a few days Mocha will have to be Euthanized. It breaks my heart. PLEASE PLEASE ANYTHING WILL HELP AND SPREAD THE WORD.