[nanahas3]

I have not been on in a while been very busy but I hope even though its very late someone might help. I live in a rual area and our vet was called but said since this little one is doing fine to bring her in tomorrow but I just needed to see if anyone here had any answers.
Here is the story. Today we recieved a call from a man in town who had found a tiny little yorkie girl who we all thought was maybe 3 months old and asked if we could foster her until the owner could be located. She was horribly dirty and covered in fleas. I bathed her and cleaned her up and then off to the vet we went to see if she had a chip in her to identify the owners. The vet looked her over and told us from her teeth that she is over a year maybe closer to 3 years old. She topped the scales at 2lbs 8 oz. Anyway we had a great day with her and our other two and put them to bed and all was well. Then about an hour ago I hear this horrible noise I run to the bathroom where we had put her little bed and she was on her side spinning very fast and foam was coming from her mouth. It didnt last long and she seems to be fine now other than maybe a little disoriented. I have two yorkies of my own and hav never experience this. My first thought was liver shunt but I wanted to ask the opinion of those here who have been around this.
We are searching diligently for her owners but after this are wondering if maybe she was abandoned because she was so ill. Please if you can help me understand this I might be able to sleep a little more tonight. Thanks so much.