First of all stop giving her human herbal remedies. Their system is different from ours and you could be hurting her. Yes, it is very torturous to force garlic down her throat. I feel very sorry for that kitten that it has had a bad life like that. You are best to take it to a vet that has had years of training and would know what to do with your pet. I remember years ago I tried giving some herbs to one of my pets and I remember it opened its mouth really wide and starting to to rub its mouth and face against something to get the substance out. The vet told me never to do that again. I felt really bad that I had done a horrible thing like that.