It's not something I like doing, very risky. But she hadn't been emptying for a little while and I didn't want her to go full sour crop if possible - plus taking all that fluid out got everything closer together so hopefully the grit can do its job better/faster.
The ACV is still diluted - I've got a jug in the fridge with water with 20ml/L ACV. vets unfortunately isn't an option as I just can't afford it right now - self employed, work very slow at the minute - so I've just got to keep on hoping! She's had some more grit-bread today and has wolfed that down, so hopefully that will be grinding up that straw nicely.
I have not read the whole thread, but gather you are dealing with an impacted crop(?)
Bread can be binding, so I would stop that. Let her have plenty of water, see if she will eat a little coconut oil and massage the crop several times a day, try to get whatever mass is in there broken up. You can also use stool softener like Dulcolax to see if that will help break it up.
Grit helps the gizzard grind up foods, but giving it after you have a crop problem will not necessarily work, so if she has grit already in the crop, then she has enough, so I would take that away too.
Here's a couple of articles that you may find helpful - one is a snapshot of how to treat different crop issues, while the other is very detailed - I recommend that you read each one through. I hope she gets better soon.
https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/
http://www.backyardchickens.com/a/impacted-slow-and-sour-crops-prevention-and-treatments