I agree with all who answered.
Don't be afraid of giving too much..... the silver won't hurt her.
I'll make this long story short I hope. We have a lot of cats and started seeing (roughly 3 1/2 years ago)some drool yucky stuff and twisting their mouths around as if in pain. I started adding silver to their water. It was getting VERY expensive so I started making my own.
The vet said it was mouth cancer. Some cats had to be put down because their cancer was too advanced. But the rest began improving. They stopped drooling and twisting their mouths. It's been about 3 years since the drooling stopped. PLUS, we have had no new cases of mouth cancer. Not one. So see? There is hope for your kittie!
Try to see if she will drink straight cs from a bowl. Some cats love it. Just don't be afraid of giving too much.
Get some plain yogurt. If she won't eat it, add some to her food. She'll need it as a probiotic.
Keep us posted as how she is doing?