I would provide her with water for the day. Give her some poultry vitamins if you have them.
Check the crop first thing in the morning, if it's not empty, then let us know (read the article too).
Photos of her poop from today and overnight would be good too.
I'm hoping her issue is just the crop and it's going to empty by the morning.
If you run into where you need to feed rice again, it would be better to cook it.
Glad you will be able to get some chick feed today. I would give her some in the morning, but not a lot.