Help fifi

This beautiful dog found herself on my door step looking cold,hungry and nervous a few days ago so since I'm a dog lover and have a dog already I took her in and tried to find out if she had am owner. No micro chip or collar, no one recognises her! Iv tried madra , gspca, vets and had loads of people share on the internet but no joy. So today I brought her to ark vet on Mary's road in galway to get her cleaned up a bit and to check her teeth because she seems to be having trouble eating and her a few teeth are missing along with one very rotten tooth. At the check up we sadly found out she has tumours in her breasts and the vet said the tooth needs to be removed asap as it's going to cause infection .. I was so upset because she is such a lovely sweet girl. So she has a long road ahead of her but the vet said he thinks it will be a good outcome for her after her tumours and possibly the breast too is removed along with her rotten tooth . My family really really want to help her but we would love some help as it's going to cost a lot. I know there are more serious things going on then a sick stray dog but I want nothing more then to have her pain free and happier then ever. Any little will go a long way for fifi.