There is no answer to your question really - you must do what you feel is right. As far as yoghurt and milk products go - chickens don't have the ability to digest the proteins, so you would be better off giving her the vitamin/electrolyte solution mixed with her chick starter. Make sure it's...
Hi there - if you cannot get her to drink, she will die soon. Try with a medicine dropper - even a couple of drops every 5-10 minutes will help. Do you have some Chick savr or similar vitamin/electrolyte additive for the water? If not some sugar water will do in a pinch. Don't give her any more...