If she ate, and because of the heat, drank a bit then that could cause it to feel mushy.
Take up their food last thing at night. In the morning, before giving them new food (bright and early please) check her crop again. If it's still quite mushy and full, it's not emptying. Then you would treat it for a slow crop or possible impaction. Though usually impaction retains most of the contents and would be more full.
If it's still the same contents, you might have to flush it out.
I also have to concur with the organic (only organic please) ACV because of the good bacteria, the way it cleans sludge from the digestive tract, and the way it tweaks the pH so that it's better for good bacteria, bad for bad bacteria and yeast/fungi (which are often a problem causing or resulting from static crop). I also agree on the plain yogurt. Alternately you could use acidophilis capsules (which are sometimes easier than yogurt because the little amount of powder is easily mixed with egg yolk and hidden, or another tiny treat they'll eat quickly. Or you can buy a prepared live bacteria probiotic such as my favorite, Probios dispersible powder from the feed store or
TSC. (The small $8 bottle lasts a good while if kept in the fridge.)
Also please at this moment only give her easily dissolved foods. My rule of thumb is that if you put them in a glass of water and come back 10 minutes later, you'll find them in a little dissolved mound at the bottom of the glass. Not whole. That way if her crop isn't moving stuff through, at least nutrients will still trickle through and keep her alive.
Do the morning check thing, please, and let us know how she does.
Also, please let us kow if she has grit, eats anything other than grower crumbles, if she free ranges, etc. Thank you!