Help with Molly's vet bill

Hi I'm not one to ask for help but my furbaby Molly Mae is sick she is almost 13 yrs old.  She's my Emotional support animal and I feel so helpless seeing her suffering...she keeps throwing up, not eating, she is drinking and having a difficult time going up the steps and she's wobbly when walking .  I took her to the vet last week paid $240 they did a urinalysis which showed she has a UTI, gave her a penicillin injection and some oral meds. I've tried buying fresh pet food for sensitive stomach a long with making her rice with chicken and a little broth but she wouldn't eat it and still throwing up so I called today and they said she needs blood work and X-ray to find out what else is going on and I'm strapped for cash right now I've been working hard to get my own place for us so I can move because I have been staying with family and I have a 45 min drive to work. I recently put a deposit down on a trailer for us so I'm stressing and struggling coming up with the money to take her back to the vet. I applied for care credit and was denied so I'm scared and my baby girl is suffering and I can't get her back to the vet I just want her to have a good quality of life I know she's old but she deserves to be comfortable.... Please if you can donate to help her she's such a great dog