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 eating less? How much less (half her usual, quarter, etc)?
Any retching, gagging, lip licking, drooling, or vomiting?
Any signs that her mouth is sore?
Is she drinking normally?
Any breathing changes?
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, plants, chemicals, human meds, etc)?