Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you with your wee one today.
How long has she been showing signs?
What does the vomit and diarrhea look like? Any blood?
Can she drink and at least keep water down?
Are her gums nice and pink (not white/pale)? Moist or sticky?
If you press on her belly, does she have any tensing, tenderness, discomfort, or pain?
Could she have eaten anything she should not have (ie bones, stones, socks, toys, plants, chemicals, human meds, etc)?