Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you today. I do apologize that your question was not answered before. Different experts come online at various times; I just came online, read about your situation, and wanted to help.
Again I do apologize that my colleagues could not aid you sooner. If you would still like assistance, can you tell me:
Was her whole body shaking or was she shaking her head?
Any changes to her breathing?
Are her gums nice and pink (not white/pale)? Moist or sticky?
Could she have eaten anything she should not have (ie bones, stones, socks, toys, plants, chemicals, human meds, etc)?