Ketos-Aid or Ceto-Phyton drench. Possibly Calcium too (Calciject injections). Preferably Combivit injections too (5ml into the muscle) - to stimulate appetite.
Give her any treats she will have - fruit, veg, bananas are good, oatcakes, toast with honey, her own milk, try oats, shreds, sheep mix or her usual goat mix. Branches (willow, raspberries, brambles, whatever else is out where you are), weeds from the garden - docks, dandelion, nettles, thistles... try some ivy branches (not the flowers or berries, just snip them off)...
A rumen stimulant (as a drench) would also be beneficial if she has stopped chewing her cud.