I've got an Ellie as well. She is the sweetest thing. Absolutely feral, but husband managed to catch her. She had lost the fur on her back when he caught her. We took her to the vet - but she had to be sedated so he could examine her. She had nasty ringworm. She joined my herd - she was number 6, and gave all of them ringworm, and shared it with me too. We managed to use up all the supplies of ringworm medicine. I visited the UK and got some more from a vet there and just as I was about to leave the office, clutching the medicine, the vet stopped me and asked if I knew that they had changed the dosage. So my poor babies had had this really strong medicine for way too long because it was the wrong dosage. I got back and with the right dose they cleared up.
Ellie was also known as Ellie the Belly because she was so fat. Since arriving in the UK she has not had dried food (she was, and still is, addicted) and is now a sensible weight.
Your Ellie sounds as if she is loved so much. And, of course, that is her right.
I want to hear how it went when you see her again.