Help...Diarrhea!

Edit....Thurs.8:30: I just talked to Sadies Vet who said to put her back on her old diet, she should be fine. I'll keep a close eye on her to be sure she is OK.
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I changed my kitties diet to quickly. Sadie has never had diarrhea before but she does now. It started last night. It was very liquid with a strong odor. She was hungry this morning & ate her pouch food for breakfast but she still has liquid stools. She is not dehydrated yet.
I transitioned her to a food that was to rich with fat...to quickly, she ate like a piggy during the day yesterday & really upset her digestive system. What is the best way to stop the diarrhea fast before she does become dehydrated?

When her stools are normal, I will back up to her old diet & change more slowly.

I have always been told cooked white rice mixed with a bit of ground beef..like 80% rice and 20% beef. Give the kitty a bit of rice-water too (what you get from cooking it) She should be fine of the vet said it's only her food.

Sadie is finally asleep. We did not get any sleep last night. She is a very tired girl...me too. I canceled my plans for the day & will stay with her until I am sure that she is stable.
Lilycurley ... Thanks for your idea about the rice & ground beef.

for Sadie ... that also works with chn if beef isnt recieved well