Keep after your Vet and insist on them examining her again. I can't tell you how many times I've gone because I noticed something off that only an owner can see. Sometimes it will take the Vet a little longer to see it.
It will help your Vet if you document as much as possible. What she eats, when and what she poops and pees. A video to show movement might help. Check her temperature again.
Poor wee thing, good luck.