HI,
My thoughts and prayer are with you and your Lily!
I would agree with the other posts as well, please take her in. My Lucy was vomiting and wouldn't eat and i took her to the ER vet last weekend and I am grateful I did. They can at least give her a shot to make her stop vomiting and help her to feel better hopefully. I would take her in ASAP!
Please update us with how she is doing!